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Q. Fill in the blanks
(I). White blood cells called phagocytes move from place to place by______ and kill microbes by first_______ them and then digesting them.
(II). Each antibody has _______ antigen-binding sites, it combines with ________ foreign microbes, causing them to _______
(III). Antibodies produced by B cells are primarily active against ______ and _______ .
IV. Allergies are treated with drugs like ________ in case of normal allergic reactions and ______ anaphylactic shock.
(V). Transplanted tissues and organs are rejected when the host's _____ attack antigens on the _______ the transplant. This set of antigens, unique to each genotype, is known as the ______ complex.

Human Health and Disease

Solution:

Correct answer is (a) I - amoeboid projections, engulfing; II - two, two, agglutinate; III - viruses, bacteria; IV - antihistamines, epinephrine; V - T cells, cell surfaces, major histocompatibility.