Contraceptive research and development.
D006063:Chorionic Gonadotropin / Q000276:immunology; D003267:Contraception / Q000191:economics / Q000379:methods / Q000523:psychology; D005260:Female; D005298:Fertility / Q000187:drug effects; D006801:Humans; D008297:Male; D012106:Research; D012108:Research Personnel / Q000193:education; D012449:Safety
D006063:Chorionic Gonadotropin