This BAC insertion expresses an enhanced Cre recombinase and an enhanced green fluorescent protein under the control of a mouse Camk2a promoter. The promoter is active in brain regions including the dentate gyrus, CA1/CA3 regions of the hippocampus, cortex, olfactory bulb, and amygdala, and more weakly active in the striatum, thalamus, and hypothalamus. (J:71980)