Agents affecting the development of the fertilized ovum.
D000014:Abnormalities, Drug-Induced; D000818:Animals; D004622:Embryo, Mammalian / Q000187:drug effects*; D005298:Fertility / Q000187:drug effects; D000882:Haplorhini; D006801:Humans; D011817:Rabbits; D051381:Rats