in this study the authors conferred the progesterone , dhas , cortisol , oestradiol , oestriol , prolactin and hpl levels of male and female newborns in the maternal vein and in the umbilical vein and artery in the 28th-32th weeks ( 31 parturients , 15 male and 16 female fetuses ) , in the 33rd-36th weeks ( 43 parturients , 20 male and 23 female fetuses ) and in the 40th week ( 34 parturients , 11 male and 23 female fetuses ) of pregnancy .
C0033308
progesterone
C0032961
pregnancy