MCQ
HIV causes reduction of:
- AT-helper cells only
- BAll T-cells
- CB-cells only
- DBoth B and T-cells
Explanation:
The T helper cells are a type of T-cells that play an important role in the immune system, particularly in the adaptive immune system. They help the activity of other immune cells by releasing T cell cytokines.
When the HIV infects the man it enters into the T-helper cells for replication and they utilize metabolic mechanism from T- helper cells. By the viral replication, T-helper cells get damaged and their number is gradually reduced.
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| Column $- I$ | Column $- II$ |
| $(a)$ Vertebrates | $(p)\; 359$ |
| $(b)$ Plants | $(q)\; 784$ |
| $(c)$ Indian invertebrate | $(r)\; 87$ |
| $(s)\; 338$ |