A subset of T cells that carry the T4 marker and are essential for turning on antibody production, activating cytotoxic T cells, and initiating other immune responses. The number of T4 cells in a blood sample is used to measure the health of the immune system in people with HIV.
HELPER CELL (T4 CELLS CD4 CELLS) ***
Meaning of HELPER CELL (T4 CELLS CD4 CELLS) *** in English
AIDS English Glossary. Английский словарь СПИДа. 2012