to examine the factors responsible for the changing responsiveness of ovine fetal adrenals during pregnancy , we incubated dispersed adrenal cells obtained from fetal sheep on days 50 , 100 , and 130 of pregnancy and at term with acth ( 1 -- 24 ) , a gtp analog [ guanosine 5 ( 1 ) - ( beta , gamma-imido ) triphosphate ] , dibutyryl camp , and potential substrates for corticosteroid production , pregnenolone , progesterone , 17 alpha-hydroxypregnenolone , and 17 alpha-hydroxyprogesterone ( 17ohp4 ) .
C0032961
pregnancy
C0033308
progesterone