Rats too fertile.
D000818:Animals; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D005260:Female; D008656:Mestranol / Q000008:administration & dosage*; D051381:Rats; D012037:Refuse Disposal; D012375:Rodent Control
D003276:Contraceptives, Oral; D008656:Mestranol