By using the expressing of CD3,CD4 and CD8 molecules as the parameter of T cell phenotypic subpopulation,and the secretion of IFN γ and IL4 as the parameter of Th1 and Th2 functional subpopulation,we studied in vitro the effect of hCG(human Chorionic Gonadotropin) on different subset of T cells.The results showed that hCG can inhibit either phenotypic or functional T cell subset in a ranged dose.These inhibition effects can be blocked after the effective ranged dose of hCG were neutralized by antihCG β an...