title: Litter size variations and emotional reactivity in BALB-c mice.
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D003672:Defecation; D004644:Emotions; D005260:Female; D006801:Humans; D008124:Locomotion; D008297:Male; D008425:Maternal Behavior; D008426:Maternal Deprivation; D051379:Mice; D009043:Motor Activity; D013315:Stress, Psychological