plasma progesterone concentrations were measured every 2 or 3 days in eastern quoll , dasyurus viverrinus , during pregnancy ( 20.5 +/- 0.8 days , n = 6 , mean +/- sem ) and the estrous cycle ( 37.5 +/- 0.7 days , n = 20 , mean +/- sem ) .
C0033308
progesterone
C0032961
pregnancy