title: [Placental estrogen and progesterone receptors in relation to gestational stage].
mesh_terms: D000022:Abortion, Spontaneous / Q000378:metabolism; D005260:Female; D006801:Humans; D010920:Placenta / Q000032:analysis*; D011247:Pregnancy / Q000378:metabolism*; D011960:Receptors, Estrogen / Q000032:analysis*; D011980:Receptors, Progesterone / Q000032:analysis*; D013997:Time Factors
chemical_list: D011960:Receptors, Estrogen; D011980:Receptors, Progesterone