these findings suggest that : ( 1 ) the effects of lhrh-a on testicular prl receptors differ depending on the presence or absence of gonadotropin , ( 2 ) gonadotropin , primarily fsh , maintains some population of testicular prl receptors , and these gonadotropin-dependent prl receptors are suppressed by direct action of lhrh-a upon the testes , and ( 3 ) there is a population of prl receptors which is not affected by lhrh-a or gonadotropin .
C0034812
gonadotropin
C0034834
prl receptors