“C57BL/6” English C57BL/6 mice C57BL/6 male wild-type mice “C57BL/6” C57Bl/6 C57BL/6J wildtype mice in-bred (B6) C57BL/6 C57BL/6 C57BL/6 “C57BL/6” Black-6 mouse (more formally known as the "C57BL/6") C57BL/6 in-bred (B6) C57BL/6 mice C57BL/6 J mice C57BL/6 C57BL/6J mice C57BL/6J mice C57Bl/6 mice F1-FVB/C57BL6-hybrid mice