STUDIES ON HUMAN PREMATURE BIRTHS.  1. PLACENTAL PROGESTERONE CONCENTRATIONS.
D000028:Abortion, Induced; D000022:Abortion, Spontaneous; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D007234:Infant, Premature; D010920:Placenta; D011247:Pregnancy; D047928:Premature Birth; D011374:Progesterone
D011374:Progesterone
ABORTION; HISTOCYTOCHEMISTRY; INFANT, PREMATURE; PLACENTA; PREGNANCY; PROGESTERONE