GENERAL ANATOMY
IMMUNE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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b-helper cell
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WBC
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T-helper cells
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RBc
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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: -Human Immunodeficiency Virus (HIV) specifically attacks Helper T cells. Without an adequate supply of Helper T cells, the immune system cannot signal B cells to produce antibodies or Cytotoxic T cells to kill infected cells.
Detailed explanation-3: -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.
Detailed explanation-4: -HIV damages B-cells as well as T-cells: new treatment targets identified.