t-helper cell

Medical Dictionary

T-helper cell n.
immune system cells that produce lymphokines that regulate the activities of other immune system cells, such as T cells, B cells, and monocytes, that are necessary for the differentiating of B cells into antibody-producing cells, and that often decrease in concentration following HIV infection.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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