examination of the time course for the loss of lipoprotein response after hcg injection revealed that injection with 50 iu of hcg results in a loss of gonadotropin response as early as 1 h after injection , but exogenous cholesterol-carrying lipoprotein fractions , ldl and hdl , were capable of stimulating progesterone production up to 4 h after hormone injection .
C0018062
hcg
C0018061
gonadotropin