[Experimental research on embryonal malformations caused by vitamin A in amphibians].
D000014:Abnormalities, Drug-Induced; D000818:Animals; D001001:Anura; D004625:Embryo, Nonmammalian / Q000187:drug effects*; D005260:Female; D010063:Ovum / Q000187:drug effects*; D014801:Vitamin A / Q000633:toxicity*
D014801:Vitamin A