however , luteal cells from early pregnancy ( 23-26 days after fertilization ) secreted siginificantly less progesterone than cells of the non-fertile menstrual cycle ( 3.6 +/- 2.4 versus 24.7 +/- 5.5 ng/ml/5 x 10 ( 4 ) cells/3 hr , n =3 ; p less than 0.05 ) and did not respond to hcg with enhanced secretion .
C1327616
secreted
C0007634
cells