Read the following statements and select the right option: I. The spleen is a large bean-shaped organ, which mainly contains lymphocytes and phagocytic cells. II. The principle of vaccination is based

Question

Read the following statements and select the right option:

I. The spleen is a large bean-shaped organ, which mainly contains lymphocytes and phagocytic cells.

II. The principle of vaccination is based on the property of memory of the immune system.

III. The graft rejection or failure of organ transplantation is due to cell-mediated immunity.

IV. The yellowish fluid colostrum has an abundant amount of IgA antibodies which provide active immunity to newborn babies.

TestHub · Accepted Answer

Passive immunity is provided by pre-formed or ready made antibodies. The yellowish fluid colostrum secreted by mother during initial days of lactation has abundant amount of IgA antibodies, which is very essential for new born baby as it provide natural passive immunity.

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