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AIDS/HIV
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Definitions T through V

T cells: White blood cells (lymphocytes) critical to the immune response. Among these are CD4+ T cells and CD8+ cells.

T lymphocyte proliferation assay: Measures the strength of response of T memory cells to HIV.

Therapeutic HIV vaccine: A vaccine designed to boost the immune response to HIV in a person already infected with the virus.

V3 loop: Section of gp120 on the surface of HIV. Appears to be important in stimulating neutralizing antibodies.

Vaccinia: A cowpox virus, formerly used in human smallpox vaccines. Employed as a vector in HIV vaccine research to transport HIV genes into the body.

Vector: A non-pathogenic bacterium or virus used to transport an antigen into the body to stimulate protective immunity.

Viremia: The presence of virus in the bloodstream.

Virion: A mature virus.

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