Effects of fetal, ovarian, and placental weight of various number of fetuses in the rat.
D000818:Animals; D005314:Embryonic and Fetal Development; D005260:Female; D005333:Fetus; D009929:Organ Size; D010053:Ovary; D010063:Ovum / Q000637:transplantation; D010920:Placenta; D011247:Pregnancy; D011270:Pregnancy, Animal; D011273:Pregnancy, Prolonged; D011555:Pseudopregnancy; D051381:Rats; D014184:Transplantation, Homologous