title: [Dynamics of 3 estrogen fraction values in blood of nonpregnant and pregnant women through radioimmunoassay].
mesh_terms: D004967:Estrogens / Q000097:blood*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011863:Radioimmunoassay; D014316:Tritium
chemical_list: D004967:Estrogens; D014316:Tritium