Some specific developmental effects of purine antagonists.
D000818:Animals; D000963:Antimetabolites; D004622:Embryo, Mammalian / Q000187:drug effects*; D004625:Embryo, Nonmammalian; D006147:Guanine / Q000037:antagonists & inhibitors*
D000963:Antimetabolites; D006147:Guanine
EMBRYO/effect of drugs on; GUANINE/antagonists