Ayala, A R Highly sensitive radioimmunoassay for chorionic gonadotropin in human urine. [electronic resource] - The Journal of clinical endocrinology and metabolism Oct 1978 - 767-73 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0021-972X Standard No.: 10.1210/jcem-47-4-767 doi Subjects--Topical Terms: Antibody SpecificityChoriocarcinoma--urineChorionic Gonadotropin--immunologyChorionic Gonadotropin, beta Subunit, HumanFemaleHumansImmune Sera--immunologyLuteinizing Hormone--immunologyMalePeptide Fragments--immunologyPregnancyRadioimmunoassayTrophoblastic Neoplasms--urineUterine Neoplasms--urine