Density and neurochemical profiles of neuronal nitric oxide synthase-expressing interneuron in the mouse basolateral amygdala.

•Density of nNOS-positive cells was 3.92×103cells/mm3 in the mouse BLA.•nNOS-containing cells are expressed by nearly one-thirds of GAD67-GFP neurons in the BLA.•Nearly every nNOS-immunoreactive cell has GAD65 immunoreactivity.•Almost all nNOS-expressing cells are GABAergic.•nNOS-positive cells express individual calcium-binding proteins and neuropeptides.