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When HIV replicates rapidly in helper T-lymphocytes and damages large number of these cells, at this stage infected persons start showing symptoms of AIDS.

1. HIV replicates rapidly in helper T-lymphocytes.
2. It damages large number of these cells.
3. At this stage, infected persons start showing symptoms of AIDS.
4. None of the above.

Correct answer: At this stage, infected persons start showing symptoms of AIDS.

Solution

The sentence says that after HIV rapidly replicates in helper T-lymphocytes and damages many of them, infected persons begin to show AIDS symptoms. So the correct choice is the statement about symptoms appearing at that stage.

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