title: hCG determinations in early pregnancy.
mesh_terms: D006063:Chorionic Gonadotropin / Q000032:analysis* / Q000592:standards; D005260:Female; D006801:Humans; D009316:National Institutes of Health (U.S.); D011247:Pregnancy; D011258:Pregnancy Tests / Q000592:standards; D011933:Reagent Kits, Diagnostic; D012015:Reference Standards; D014481:United States
chemical_list: D006063:Chorionic Gonadotropin; D011933:Reagent Kits, Diagnostic