The antiimplantation effect of the polyethylene IUD in the rat.
D000818:Animals; D010064:Embryo Implantation; D005260:Female; D005549:Foreign-Body Reaction; D007434:Intrauterine Devices; D010063:Ovum; D011095:Polyethylenes; D011247:Pregnancy; D051381:Rats; D014599:Uterus / Q000033:anatomy & histology
D011095:Polyethylenes