Meaning of HELPER T CELL

WordNet Dictionary
	Definition:		[n]  T cell with CD4 receptor that recognizes antigens on the surface of a virus-infected cell and secretes lymphokines that stimulate B cells and killer T cells; helper T cells are infected and killed by the AIDS virus
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	Synonyms:		CD4 cell, CD4 T cell
	See Also:		T cell, T lymphocyte
Biology Dictionary
	Definition:		A type of white blood cell produced by the thymus gland whose presence is necessary for normal levels of antibodies to be produced by B lymphocytes, both in the body (in vivo) and in experimental situations (in vitro).
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