Figure 3.
Enhanced yellow fluorescent protein (EYFP) and somatostatin double-labeling in a control mouse. A A putative channelrhodopsin-positive neuron identified by EYFP. The green soma and dendrites were concentrated in the hilus (h). g=granule cell layer. B Immunocytochemistry for somatostatin revealed the red soma in the hilus. C The merged view revealed that the EYFP-positive hilar neuron was double-labeled for somatostatin.