title: Ontogenic study of plasma 17alpha-hydroxyprogesterone in the human. I. Postnatal period: evidence for a transient ovarian activity in infancy.
mesh_terms: D000367:Age Factors; D000735:Androstenedione / Q000097:blood; D005260:Female; D006801:Humans; D006908:Hydroxyprogesterones / Q000097:blood*; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010053:Ovary / Q000502:physiology*; D011863:Radioimmunoassay; D012737:Sex Factors; D013739:Testosterone / Q000097:blood
chemical_list: D006908:Hydroxyprogesterones; D013739:Testosterone; D000735:Androstenedione