A) Examples Type of immunity Polymorph nuclear leukocytes and monocyes Cellular barriers
B) Anti-tetanus and anti-snake bite injections Active immunity
C) Saliva in mouth and tears in eyes Physical barriers
D) Mucus coating of epithelium lining the Physiological bariers primogenital tract and the HCl in stomach
Correct Answer: A
Solution :
Phagocytosis is an important feature of cellular innate immunity, performed by cells called phagocytes that engulf or eat pathogens or foreign particles. Common examples of these phagocytes are monocytes, macrophages, neutrophil granulocytes (often referred to as polymorphonuclear leukocytes or PMN or PML, because of the varying shapes of nucleus), tissue dendritic cells, mast cells etc. Antitetanus and anti snake bite injections are examples of passive immunity.
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