title: The use of the South African frog (Xenopus laevis) in the diagnosis of pregnancy.
authors.forename: S L
authors.initials: SL
authors.lastname: ROBBINS
authors.forename: F
authors.initials: F
authors.lastname: PARKER
authors.forename: W C
authors.initials: WC
authors.lastname: DOYLE
mesh_terms: D000818:Animals; D044383:Black People; D006801:Humans; D011247:Pregnancy / Q000175:diagnosis; D014982:Xenopus laevis