Virus-host cell interactions in human immunodeficiency virus infections.

Abstract

The isolate HTLV-IIIB is used by a large number of investigators for a variety of studies. The data shown here emphasize the uniqueness of this isolate with respect to certain biological behaviors, in particular, the ability to infect cells other than T lymphocytes and mononuclear phagocytes, and the ability to infect chimpanzee T cells. Data also presented indicates that HTLV-IIIB has a greater binding affinity for the CD4 receptor molecule, which may help to explain its observed biological uniqueness. Caution in generalizing from findings based on studies with HTLV-IIIB alone is recommended. In addition, evidence demonstrating CD4-mediated entry of HIV-1 into normal human monocyte/macrophages is included.

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