HOBSON, B M Routine pregnancy diagnosis and quantitative estimation of chorionic gonadotropin using female Xenopus laevis. [electronic resource] - The Journal of obstetrics and gynaecology of the British Empire Jun 1952 - 352-62 p. digital Publication Type: Journal Article ISSN: 0307-1871 Standard No.: 10.1111/j.1471-0528.1952.tb04133.x doi Subjects--Topical Terms: AnimalsChorionic GonadotropinFemaleHumansPregnancyPregnancy TestsRegression AnalysisXenopus laevis