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Define the Role of Vitamin A in immune response?
Vitamins A is essential to normal immune function and- regulation. As discussed above, during vitamin A deficiency the goblet cell numbers are reduced in epithelial tissues and as a consequence, mucous secretions (with their antimicrobial components) diminish. Cells lining protective tissue surfaces fail to regenerate and differentiate; hence they flatten and accumulate keratin. Both factors - the decline in mucous secretions and loss of cellular integrity- reduce the body's ability to resist invasion from potentially pathogenic organisms. Pathogens can also compromise the immune system by directly interfering with the production of some types of protective secretions and cells.
Q. What are the capillaries of the vascular system? Capillaries are small blood vessels that perform exchange of substances between the tissues and blood the body Capillaries a
Diagram and describe the signalling of toll like receptors and the resulting cytokines.
Define Single Beam and Double Beam Optical Path? In simpler instruments, a single beam of light passes through the cuvettes and reaches the detector whereas in the double beam
plese help for an assignment of topic parasitic flat worms for a first year zoology student.
Illustrate about the Chemical disinfection Sharp waste may cause injury and person may have diseases like Hepatitis B, Cand HIV/AIDS. Therefore it is important for to understa
If a cow develops a preference for eating white four o'clock flowers and ignoring pink and red four o'clock flowers, what type of selection is being demonstrated? Would the cow eve
How is the blood typing concerning the ABO system and the Rh usually done? In the blood typing for the ABO system and the Rh system a blood sample is collected from the person
Q. How does the cellular immune response take place? The lymphocytes that participate in the cellular immune response are the T lymphocytes and T lymphocytes differentiate into
Explain the Ethological Approach in Taxonomy The use of behavioural or ethoIogica1 characteristics in animals is relatively new, though extremely useful, particularly in the id
MOD E OF HORMONE ACTION THROUGH INTRACELLULAR RECEPTORS - Steroid hormones are lipid-soluble and easily pass through the cell membrane of a target cell into the cytoplasm.
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