THE HUMAN IMMUNE SYSTEM
AIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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b-cells
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K-cells
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T-cells
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G-cells
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Detailed explanation-1: -HIV binds to the CD4 molecule on the surface of helper T-cells and replicates within them. This results in destruction of CD4+ T-cells and leads to a steady decline in this population of T-cells.
Detailed explanation-2: -HIV destroys CD4 T lymphocytes (helper T cells). Because of this, healthcare professionals measure CD4 levels to monitor HIV progression and AIDS. Helper T cells are crucial for immune system function and activate after encountering antigens from disease-causing microorganisms.
Detailed explanation-3: -Both HIV-infected and uninfected CD4 T cells die during HIV infection. HIV induces cell death in both uninfected and infected T cells.
Detailed explanation-4: -HIV infection causes an acquired immunodeficiency, principally because of depletion of CD4 lymphocytes. The mechanism by which the virus depletes these cells, however, is not clearly understood.