title: Serum human placental lactogen (HPL) levels in normal pregnancy.
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D010928:Placental Lactogen / Q000097:blood*; D011247:Pregnancy; D011863:Radioimmunoassay / Q000379:methods; D013997:Time Factors
chemical_list: D010928:Placental Lactogen