Fig. 3D reconstructions of two transparent neocortical pyramidal cells summarizing numbers and positions of subsurface cisterns (magenta). At least 36 (left) and 50 (right) of them were found. Those cisterns which also attached the plasma membrane but did not form a typical narrow configuration were not included. Widths of the cell bodies are 12 µm (left) and 9 µm (right). (Neocortex, mouse. Series from Kasthuri et al., 2015 used for reconstructions.)