Water expand when it is freeze. So, the cell damaged. Where as snowdrops (Galanthus nivali) are hardy tiny plants that can survive harsh winter.
When you freeze produce, you're actually freezing the water that's inside the plant's cells. When water freezes, it expands, forming ice crystals that break down the cell walls. So, compared to when it was fresh, the texture of thawed produce is significantly softer. This is especially valid for food that is often consumed uncooked.
snowdrops (Galanthus nivali) are hardy tiny plants that have evolved to withstand the cold and break through snow. Their sap contains a type of antifreeze that keeps ice crystals from forming, and the tips of their leaves are specifically toughened to break through frozen ground.
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Why would fire frequency be changed i Rinderpet wa eradicated through vaccination?
In the 1960s, a vaccination effort against rinderpest resulted in the recovery of ungulate populations as well as a decline in vegetation biomass and wildfires. The vegetation community was returned to grasslands as a result of the change in grazing intensity.
Animals contracted the virus by breathing the breath, secretions, or excretions of sick animals since the virus transmitted via droplets. For wild herds, rinderpest was a so-called "dead-end disease" because the low population density prevented the transmission of the illness. The disease was eradicated in 2011 thanks in large part to the dead-end in wild herds and the 1960 development of a powerful vaccination.
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how does a plant cell fight osmosis in a hypotonic solution
The cell has a central vacuole that grows as water is taken in. Osmosis is countered by turgor pressure in the cell as a result.
In a solution that is hypotonic, how do plant cells behave?When a cell is maintained in a hypotonic medium, it absorbs water from the surrounding medium and expands. The pressure exerted by the cell membrane against the cell wall causes plant cells to swell, but these cells do not burst.
How does osmosis work in solutions that are both hypertonic and hypotonic?When a cell is in a solution that is hypertonic, the solution contains less water than the cell's cytosol, and water leaves the cell until both solutions are isotonic. Until both the external solution and the cytosol are isotonic, cells placed in a hypotonic solution will absorb water across their membranes.
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Which device should Atticus power test next in Santa Barbara to try to reach the desired change in motion
Additionally, Atticus use repetition to increase the force of his claims. He employs repetition, for instance, to describe how the power test was consistently broken.
Who was Santa Barbara's founder?Governor Takes precedence de Neve & Padre Serra established the Santa Barbara Royal Fort on April 21. The command was given to Lieutenant José Francisco Ortega. Nine Christian Indian servants, 36 troops, and 7 officers served under him. There was a delay in Mission Santa Barbara's official foundation.
Santa Barbara is it close to Los Angeles?Santa Barbara is a city in southwest California and the county seat for Santa Barbara County since 1850. It is situated on the Santa Cruz Channel side of the Santa Ynez Hills, along the Pacific coast. It's located 156 kilometers (97 miles) northwest downtown Los Angeles.
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Additionally, Atticus use repetition to increase the force of his claims. He employs repetition, for instance, to describe how the power test was consistently broken.
Who was Santa Barbara's founder?Governor Takes precedence de Neve & Padre Serra established the Santa Barbara Royal Fort on April 21. The command was given to Lieutenant José Francisco Ortega. Nine Christian Indian servants, 36 troops, and 7 officers served under him. There was a delay in Mission Santa Barbara's official foundation.
Santa Barbara is it close to Los Angeles?Santa Barbara is a city in southwest California and the county seat for Santa Barbara County since 1850. It is situated on the Santa Cruz Channel side of the Santa Ynez Hills, along the Pacific coast. It's located 156 kilometers (97 miles) northwest downtown Los Angeles.
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Even though we have over 3 billion base pairs in our DNA, when our cells make a copy, we end up with only a small number of mutations. What explains that?
which part of the microscope is most important in determining its resolving power
The numerical aperture of an objective dictates its resolving power, but it also affects a microscope system's overall resolution since it controls the numerical aperture of the substage condenser.
A microscope is a device that enlarges an image of a small object to expose details that the unassisted eye cannot perceive. The most common kind of microscope is the optical microscope, which uses visible light that has been focussed by lenses.
The resolution improves as the numerical aperture of the whole system increases.
The objective numerical aperture is the main factor in determining resolution, but resolution is also influenced by the type of specimen, coherence of illumination, degree of aberration correction, and other factors like contrast-enhancing techniques in the microscope's optical system or in the specimen itself.
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i crosscut my nail with a knife . will it ever heal???
when do new nuclei form around the chromatin of the two new forming cells?
New nuclei form around the chromatin of the two new forming cells during mitosis, the process of cell division.
During mitosis, the chromatin condenses into chromosomes and the cell's nucleus divides into two daughter nuclei. As the chromosomes separate, new nuclei form around the chromatin of each of the two new cells.
What is cell division?
Cell division is the process by which cells divide to produce two daughter cells, each with the same genetic material. It is the process by which organisms grow and replace worn out or damaged cells. Cell division occurs in both prokaryotic and eukaryotic cells, and is essential for the development and growth of all living organisms.
Therefore, New nuclei form around the chromatin of the two new forming cells during mitosis, the process of cell division.
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What were the two laws Mendel developed as a result of his work with peas?.
The laws of segregation and independent assortment describe how individual qualities are inherited and how two or even more traits being inherited relative with one another.
Peas are readily cultivated in great quantities, and their reproduction may be controlled. Peas also have male and female reproductive organs, allowing them to self-pollinate in addition to cross-pollinate. Mendel is regarded as the father of genetics because to his seminal work on heredity in pea plants 150 years ago. Mendel launched a series of experiments just at monastery in 1856 to discover how features are handed down through the generations. It was considered at the time that the qualities of the parents were merged together in their offspring.
Mendel examined pea inheritance (Pisum sativum). He picked peas because they had previously been used in comparable trials, they are easy to cultivate, and they can be seeded every year. Pea blooms have both male and female components, known as stamen & stigma, and self-pollinate. Self-pollination occurs even before flowers open, resulting in offspring from a single plant.
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absorb wavelengths of light different from those absorbed by chlorophyll
Carotenoids absorb wavelengths of light different from those absorbed by chlorophyll
What are carotenoids?
Chlorophylls do not absorb wavelengths of green and yellow, which is indicated by very low degree of light absorption from about 500 to 600 nm. Absorption spectrum of β-carotene ( carotenoid pigment) includes violet and blue-green light, as indicated by its peaks at around 450 and 475 nm.
Chlorophyll, green pigment common to all photosynthetic cells, absorbs all wavelengths of visible light except green, which it reflects. This is why plants appear green to us. Black pigments absorb all wavelengths of visible light that strike them. White pigments reflect most of wavelengths striking them.
Chlorophyll a absorbs violet and orange light the most. Chlorophyll b absorbs the mostly blue and yellow light. They both also absorb the light of other wavelengths with less intensity
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What hormone i a peron who i alway thirty and urine contain a little but dilute ugar lack?
Large quantities of clear urine come from the body's inability to retain water if ADH levels are low or the kidneys do not respond to ADH.
The pituitary gland releases the antidiuretic hormone (ADH), also known as vasopressin (AVP), which aids the kidneys in maintaining a healthy level of bodily water.
A uncommon illness called diabetes insipidus (DI) causes excessive thirst and urination (passing a lot of clear urine). The pituitary gland releases vasopressin (AVP), also known as ADH, which aids the kidneys in regulating the body's water balance.
The body cannot retain water, resulting in huge quantities of clear urine, if ADH levels are low or the kidneys do not respond to ADH. Dehydration and increased thirst are the effects of this, in turn.
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steroid hormones are synthesized from amino acids.
Steroid hormones are not synthesized from amino acids. Steroid hormones are a class of hormones that are synthesized from cholesterol.
Cholesterol is a steroid, which is a type of lipid. It is a precursor for the synthesis of steroid hormones, such as androgens, estrogens, and progestogens. Cholesterol is converted into steroid hormones in the endocrine glands such as the gonads (testes and ovaries) and adrenal glands.
The steroid hormone synthesis starts with the conversion of cholesterol to pregnenolone, which is then converted to other steroid hormones such as progesterone, androstenedione, testosterone, and estradiol. These hormones are lipid-soluble, which allows them to diffuse through the cell membrane, and interact with intracellular receptors to modulate gene expression or other cellular responses.
Amino acids, on the other hand, are the building blocks of proteins, they are not precursors for steroid hormone synthesis. They are used in the synthesis of other hormones such as adrenaline, insulin, growth hormone, and thyroid hormones.
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What is the F2 phenotypic ratio of purple and white flowers?.
3:1 is the F2 phenotype ratio for purple and white flowers.
A phenotype ratio is a quantitative relationship between phenotypes, indicating how often one phenotype's frequency correlates with another. Phenotypic ratios obtained from test crosses are used when researchers wish to obtain generational gene expression of an organism. There were 3:Violet 1 Ratio: White flowers were seen in the F2 generation because the 'masked' (recessive) gene in the F1 generation was allowed to mate, but only one mating was allowed, whereas the other gene was allowed to mate with his It bloomed purple flowers three times.
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nuclear membrane reforms, cytoplasm divides, 4 daughter cells formed
The nuclear membrane reforms, the cytoplasm divides, and 4 daughter cells form in telophase II.
The fourth stage of meiosis II, telophase II, sees the opposite poles of the chromosomes, cytokinesis, the division of the two cells produced by meiosis I into four haploid daughter cells, and the formation of nuclear envelopes. The nuclear membranes of the two cells are fully formed at the conclusion of telophase II. After that, meiosis is over. When it comes to males, each cell produces sperm. One cell becomes an egg in females, and the other three become polar bodies that are not used.
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What type of RNA has the main function of transferring amino acids to the ribosomes *?.
The kind of RNA which has the main function of transferring the amino acids to the ribosomes is the tRNA. It is also referred to as transfer RNA. By connecting an mRNA codon and the amino acid it codes for, these transfer RNAs serve as "bridges."
The process of translation involves transforming the information included in an mRNA molecule into a polymer made up of many amino acid subunits. The ribosomes, which read the mRNA three codons or nucleotides at a time, are the structure that makes translation possible. The ribosome uses instructions from messenger RNA to assemble the amino acids bound to transfer RNA in the correct sequence for the synthesis of each type of protein in the cell.
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What happens when a gene is turned on?.
When a gene is turned on, also known as gene expression, the DNA code for that gene is transcribed into RNA by an enzyme called RNA polymerase.
The RNA molecule then leaves the nucleus and travels to a ribosome in the cytoplasm, where it is translated into a specific protein. The protein produced by the gene plays a specific role in the cell, such as acting as an enzyme, a structural component, or a regulatory molecule.
Different genes are turned on and off at different times and in different cells, allowing for the diverse functions and specializations of cells in the body.
The regulation of gene expression is controlled by a complex network of genetic and environmental factors, and disruptions in this process can lead to disease.
Understanding the mechanisms that control gene expression is a key area of research in genetics and biology, with potential applications in medicine and biotechnology.
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Are larger elements made with fusion or fission? Are they easier or harder to make?
Answer:
Fusion
Explanation:
Fusion occurs when two atoms slam together to form a heavier atom, like when two hydrogen atoms fuse to form one helium atom. This is the same process that powers the sun and creates huge amounts of energy—several times greater than fission.
Fission prevents heavier elements from forming
what relationship exists between amino acids and proteins?
Amino acids are the structure blocks of proteins. Proteins are polymers of amino acids, which are linked together in a specific order by peptide bonds.
Different proteins are formed by the combination of different amino acids. The sequence of the amino acids determines the shape and function of the protein. For illustration, two different proteins may contain the same amino acids, but the order of the amino acids will be different, leading to a different shape and function of the protein. For illustration, collagen and fibrin are both forms of protein but have different functions due to their different amino acid sequences. thus, amino acids and proteins have a direct relationship as one can not live without the other.
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Which observation suggests that eukaryotes may share a more recent common ancestor with bacteria than with archaea?
Many genes that affect metabolism in yeast are more similar to bacterial than archaeal genes. This supports the fact that eukaryotes may share a more recent common ancestor with bacteria than with archaea.
Organelles and a membrane-bound nucleus are only found in cells classified as eukaryotic. Eukaryotic creatures are big and complicated because eukaryotic cells include nuclei that are encased in nuclear membranes. Eukaryotic cells are found in protozoa, fungi, plants, and mammals.
They fall within the Eukaryotic kingdom. All living things are eukaryotic. Because they lack cell walls and chloroplasts and have smaller vacuoles, animal cells differ from those of other eukaryotes, most notably plants. Animal cells are capable of changing into a variety of forms because they lack a cell wall.
The cells of prokaryotic organisms, in contrast, lack organelles and are typically smaller than eukaryotic cells.
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Choose all that are components of a visceral reflex arc in order.
- Receptor
- Interneuron
- Efferent neurons
- Effector
- Afferent neuron
Components of a visceral reflex arc in order are Receptor, Afferent neuron, Interneuron, Efferent neurons, Effector
What is Efferent neurons?Efferent neurons, also known as motor neurons, are a type of neuron that sends signals from the central nervous system (CNS) to muscles, glands, and organs. They play a key role in controlling the body’s functions, either directly or indirectly. They can be sensory or motor, depending on the signals they carry. Efferent neurons send signals to muscles to contract, to glands to secrete hormones, and to organs to alter their activities. They also help control the body's reflexes and movement. Efferent neurons are responsible for voluntary and involuntary movements, such as walking, speaking, and breathing. They also control the body’s autonomic functions, such as digestion, heart rate, and blood pressure.
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Which form of energy changes in chemical reactions due to bonds breaking and forming?.
In endothermic reactions, bonds in the reactants are broken, absorbing more energy than is released when new bonds are formed in the products.
Exothermic refers to chemical reactions that release energy. More energy is produced when bonds are formed in exothermic process products than is needed to break the bonds between the reactants. The temperature of the reaction mixture rises as a result of exothermic reactions. Bond creation refers to the process of creating new bonds during a chemical reaction, while bond dissociation refers to the process of breaking existing links during a chemical reaction. Energy is released during the formation of bonds, and it is required for their cleavage. Bonds develop as a result of the system becoming more stable due to favourable interactions between orbitals and the electrons contained inside those orbitals.
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Can clams and snails live together?.
Yes, clams and snails can live together in the same habitat.
Clams and snails are both aquatic animals that can be found in a variety of freshwater and marine environments. Clams are bivalve mollusks that live buried in the sediment, while snails are gastropod mollusks that move around on the surface of the sediment or water. Both clams and snails are filter feeders, which means that they filter small particles from the water for food.
When living together, clams and snails can coexist in the same habitat as long as there is enough food and space for both species. They may also have different feeding habits and preferences, which can help them to coexist without competition for resources. Additionally, clams can act as a food source for snails, so they can also have a symbiotic relationship. However, it's important to note that the specific conditions of the habitat and the presence of other species may also affect the compatibility of clams and snails living together.
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What i the theory that ugget out galaxie wa dener than it i now and alway expanding
The universe has always existed and will continue to exist, according to steady state theory. According to the oscillating universe theory, once all of the energy from the Big Bang has been expended, the universe will start to contract.
The universe will then collapse, giving rise to a brand-new universe.The universe has no beginning and no end, according to the steady-state model, which claims that despite its expansion, the universe doesn't change how it looks over time (the perfect cosmological principle). This required that matter be continually produced in order to maintain the density of the universe.To know more about galaxy here
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How have humans grown beyond the expected carrying
capacity of the Earth without agriculture of 10 million?
Provide two examples from the text.
As population grows, the demand for food also raises as a result the price of agricultural outputs increase.
What is another word for increase?Some common synonyms of increase are augment, enlarge, and multiply. While all these words mean "to make or become greater," increase used intransitively implies progressive growth in size, amount, or intensity; used transitively it may imply simple not necessarily progressive addition.
How to use increase?to become greater in amount, number, value, etc.; to make something greater in amount, number, value, etc. Costs have increased significantly. The price of oil increased. increase in something Oil increased in price.
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The price for agricultural products rises as a result of rising food demand and population growth.
What else do you call growth?A few commonly used synonyms for increase include enhance, enlarge, and expand. All of these verbs mean "to make or become greater," but when used with the passive, "growing" means a gradual expansion in size, quality, or intensity. However, when used in the active, it might also imply straightforward addition as opposed to gradual expansion.
How do you use growth?to increase something's volume, number, worth, etc.; it make something even more substantial. Costs have considerably gone up. The cost of oil went up. augmentation of something The price of oil rose.
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Select the correct statement regarding adipose tissue: its primary function is nutrient storage it is composed mostly of extracellular matrix mature adipose cells are highly mitotic most of the cell volume is occupied by the nucleus adipocytes are found in lacunae
Its main job is to store nutrients. Lipids, which are stored as energy in fat cells (or fat). Once produced from progenitor cells, they are not particularly mitotic cells and frequently do not divide at all.
What is the main function of adipose tissue?It can be found in bone's interior cavities, subcutaneous fat beneath the skin, and visceral fat between your internal organs (bone marrow adipose tissue).
Is nutrient storage the primary function of adipose tissue?Adipose tissue is a crucial regulator of the systemic energy balance because it acts as a caloric reserve. Adipose tissue uses lipolysis to supply nutrients to neighboring tissues in nutrient deficiencies while storing additional resources as neutral lipids in nutrient surpluses.
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8
What types of pollution caused by humans are worsening the condition of the
coral reefs?
- Sedimentation from coastal development, urban stormwater runoff, forestry, and agriculture.
Sedimentation has been identified as a primary stressor for the existence and recovery of coral species and their habitats. Sediment deposited onto reefs can smother corals and interfere with their ability to feed, grow, and reproduce
- Nutrients (nitrogen and phosphorous) from agricultural and residential fertilizer use, sewage discharges (including wastewater treatment plants and septic systems), and animal waste
Nutrients are generally recognized as beneficial for marine ecosystems; however, coral reefs are adapted to low nutrient levels; so an excess of nutrients can lead to the growth of algae that blocks sunlight and consumes oxygen corals need for respiration. This often results in an imbalance affecting the entire ecosystem. Excess nutrients can also support growth of microorganisms, like bacteria and fungi, that can be pathogenic to corals.
- Pathogens from inadequately treated sewage, stormwater, and runoff from livestock pens. Although rare, bacteria and parasites from fecal contamination can cause disease in corals, especially if they are stressed by other environmental conditions. Coral disease occurs in healthy ecosystems, but the input of pathogen-containing pollution can exacerbate the frequency and intensity of disease outbreaks.
- Toxic substances, including metals, organic chemicals and pesticides found in industrial discharges, sunscreens, urban and agricultural runoff, mining activities, and runoff from landfills
- Pesticides can affect coral reproduction, growth, and other physiological processes. Herbicides, in particular, can affect the symbiotic algae (plants). This can damage their partnership with coral and result in bleaching. Metals, such as mercury and lead, and organic chemicals, such as polychlorobiphenyls (PCBs), oxybenzone and dioxin, are suspected of affecting coral reproduction, growth rate, feeding, and defensive responses.
- Trash and micro-plastics from improper disposal and stormwater runoff. Trash such as plastic bags, bottles, and discarded fishing gear (also called marine debris) that makes its way into the sea can snag on corals and block the sunlight needed for photosynthesis, or entangle and kill reef organisms and break or damage corals. Degraded plastics and microplastics (e.g., beads in soap) can be consumed by coral, fish, sea turtles, and other reef animals, blocking their digestive tracts and potentially introducing toxics.
- Overfishing can alter food-web structure and cause cascading effects, such as reducing the numbers of grazing fish that keep corals clean of algal overgrowth. Blast fishing (i.e., using explosives to kill fish) can cause physical damage to corals as well.
- Coral harvesting for the aquarium trade, jewelry, and curios can lead to over-harvesting of specific species, destruction of reef habitat, and reduced biodiversity.
how to activate the immune system to produce specific antibodies produced by B lymphocytes
Each B cellphone produces a single species of antibody, every with a unique antigen-binding site. When a naïve or reminiscence B mobile is activated by antigen (with the aid of a helper T cell), it proliferates and differentiates into an antibody-secreting effector cell.
How do you set off B lymphocytes?B lymphocyte activation is initiated through the binding of antigens to the clonally expressed B mobile receptors (BCRs) triggering signaling cascades that lead to the transcription of a range of genes associated with B phone activation.
How are lymphocytes activated to make antibodies?Lymphocyte activation happens when lymphocytes (B cells or T cells) are prompted through antigen-specific receptors on their mobilephone surface. This causes the cells to proliferate and differentiate into specialised effector lymphocytes.
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a normal fasting blood glucose level is ________ mg/dl.
Fasting blood sugar levels of 99 mg/dL or less are considered normal.
Fasting blood sugar levels of 99 mg/dL or less are considered normal, 100 mg/dL to 125 mg/dL are considered to be prediabetic levels, and 126 mg/dL or above are considered to be diabetes levels.
This checks your blood sugar levels before and after consuming a glucose-containing beverage. Before the test, you will fast (not eat) and have blood drawn to check your fasting blood sugar level. After consuming the liquid, your blood sugar level will be monitored an hour, two hours, and perhaps three hours later. A blood sugar level of 140 mg/dL or less at two hours is regarded as normal; 140 to 199 mg/dL denotes prediabetes; and 200 mg/dL or above denotes diabetes.
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When interpreting and discussing results, if the hypothesis is falsified the investigator must suggest alternate hypotheses to continue the experiment.
Select one:
True
False
Topic 4a (6) The three main limiting factors that affect the rate of photosynthesis
Answer:
Light intensity, Carbon Dioxide concentration and temperature.
Which immune cells are activated first when suspicious cells are identified in the blood stream?
The immune cells are activated first when suspicious cells are identified in the bloodstream as neutrophils.
What are neutrophils?Neutrophils аre phаgocytes, typicаlly the first cells to аrrive аt the site of аn infection, аs numerous neutrophils keep circulаting in the blood streаm аt аny given time. Neutrophils аre аlso cаlled polymorpho-nucleаr cells (PMNs) becаuse of the multi-lobed nаture of their nuclei, which аre produced in the bone mаrrow.
Neutrophils possess grаnules which аre cаpаble of killing microbes in their cytoplаsm, аnd hence аre known аs grаnulocytes. These short-lived neutrophils comprise the mаjority of white blood cells. Neutrophils hаve severаl different types of surfаce receptors thаt recognize specific molecules or pаtterns present exclusively in microbes. Some surfаce receptors аre chemoаttrаctаnt receptors, for аttrаction of neutrophils towаrds the microbes. Thus, the mаin function of neutrophils is to pаtrol the body, looking for the invаding microbes аnd to immediаtely respond to inflаmmаtion to phаgocytose them.
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