Specific expansion of motor cortical projections in a singing mouse

Mouse husbandry All experiments were approved and conducted in accordance with the Cold Spring Harbor Laboratory Institutional Animal Care and Use Committee. All animals used were adult (>3 months) male and female mice. Laboratory mice were acquired from The Jackson Laboratory (C57BL/6J). Colonies of laboratory and singing mice were maintained at 20–22 °C, 30–70% humidity and a 12–12 h light–dark cycle. …