title: Prostaglandin F 2   concentrations in peripheral blood during the first stage of normal labour.
mesh_terms: D000906:Antibodies; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D009119:Muscle Contraction; D011247:Pregnancy; D011453:Prostaglandins / Q000097:blood* / Q000502:physiology; D011485:Protein Binding; D011863:Radioimmunoassay; D013997:Time Factors; D014316:Tritium; D014599:Uterus / Q000502:physiology
chemical_list: D000906:Antibodies; D011453:Prostaglandins; D014316:Tritium