HIV, which causes AIDS, first starts destroying:
Correct answer: A. Helper T-Lymphocytes
- A. Helper T-Lymphocytes
- B. B-lymphocytes
- C. Leukocytes
- D. None of these
Explanation
AIDS (acquired immunodeficiency syndrome), a syndrome, is caused by the retrovirus HIV (human immunodeficiency virus). The virus destroys a subgroup of lymphocytes, the helper T cells (or CD4 lymphocytes), resulting in suppression of the body's immune response. HIV is transmitted in blood, semen, and vaginal fluid; the major routes of infection are unprotected vaginal and anal intercourse, intravenous drug abuse, and the administration of contaminated blood and blood products. A combination of antiviral drugs can delay the development of full-blown AIDS for many years but cannot fully cure the disease.
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