title: Differences in aggressive behaviour between male mice (Mus musculus L.) in colonies of different sizes.
mesh_terms: D000374:Aggression; D000818:Animals; D000830:Animals, Laboratory; D001522:Behavior, Animal; D003441:Crowding; D004777:Environment; D006801:Humans; D008297:Male; D051379:Mice; D009043:Motor Activity; D011156:Population Density; D012919:Social Behavior; D012930:Social Dominance; D013997:Time Factors