Q.

The virus of AIDS affects the growth of

A. Haemoglobin
B. RBCs in blood
C. T cells in blood
D. Grey cells in brain
Answer» C. T cells in blood
Explanation: Human immunodeficiency virus (HIV) attacks and kills crucial immune system cells, known as T-helper cells. A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. They are called T cells because they mature in the thymus from thymocytes.
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