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维生素A(VitA 类对动物的致畸胎趋势被公认已超过30年。Giroud 等证明大鼠的致畸量最少是250IU/日,发生畸胎的类型取决于给予VitA 的胚胎发育阶段。
Vitamin A (Tentative teratogenic trend in animals has been recognized for more than 30 years.) Giroud et al. Demonstrated that the amount of teratogenicity in rats was at least 250 IU / day. The type of teratogenesis depends on the embryonic development stage given to VitA.