Fig. 1

Experiment design. a, b Blocks of post-fixed post-mortem brain tissue containing OFC were separated (b) and cut into 50 μm thin sections in series (c). One batch of sections were processed for EM imaging. d A 100 nm ultrathin section was examined and multiple ROIs covering the entire section were imaged. e Example of high-resolution image from one ROI. f Adjacent sections were stained histologically to visualize all neurons or immunostained with antibodies against respective molecular markers to visualize inhibitory neurons (f)