Observations on the use of the male north American frog (Rana pipiens) in pregnancy diagnosis.
D000818:Animals; D001001:Anura; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011258:Pregnancy Tests; D044469:Racial Groups; D011894:Rana pipiens; D014481:United States
FROGS; PREGNANCY TESTS