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HON's MedHunt:

  Helper T-cell Multimedia
from HONselect:

 T-Lymphocytes, Helper-Inducer
 CD4-Positive T-Lymphocytes

Helper T-cell
CD4 Cell, Helper, Helper Cell, T Helper Cell, T-helper lymphocyte, T4 Cell

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.

T-helper lymphocytes contain two subsets, TH1 and TH2 cells.



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