Extended Data Fig. 9: Specificity of CoChR expression in dorsal striatum.
From: Neuropixels Opto: combining high-resolution electrophysiology and optogenetics

a, Epifluorescence image of native CoChR-EGFP expression (green) with DAPI counterstain (blue) for D1-CoChR virus AiP14033 (left), D2-CoChR virus AiP14035 (middle), and Chol-CoChR virus AiP14036 (right). Each virus was injected at 2E+9vg dose into adult C57 mice. Abbreviations: CP-caudoputamen, GPe-Globus pallidus externa, GPi-Globus pallidus interna, SNr-substantia nigra pars reticulata. b, High colocalization of anti-GFP (reporting CoChR-EGFP fusion protein) and anti-ChAT labeling in the dorsal striatum brain sections from AiP14036 virus-injected mouse.