Feb 13, 2011
What CD4 cell? Are they part of white blood cell?Why do HIV attack CD4 cell only?
Response from Dr. Holodniy
Yes, they are a white blood cell and part of the lymphocyte family. HIV attacks CD4 cells in particular because the outside of an HIV virus can lock onto a CD4 receptor to gain entry into the cell, and many other kinds of white blood cells don't have this receptor and so are not infected.
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