Maternal responsiveness and nest defense during the prepartum period in laboratory rats.
D000818:Animals; D005260:Female; D008425:Maternal Behavior / Q000502:physiology*; D009425:Nesting Behavior / Q000502:physiology*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology*; D051381:Rats; D013997:Time Factors