title: Effects of the DBA/1Bg Y chromosome on testis weight and aggression.
mesh_terms: D000374:Aggression; D000818:Animals; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D009929:Organ Size; D013045:Species Specificity; D013737:Testis / Q000033:anatomy & histology*; D014998:Y Chromosome