AllenInstituteElectronMicroscopyMouseCortex_06-13-2018

Figure 1. A 40 nanometers wide slice of mouse neocortex cut from a one cubic millimeter sample. The sample this slice was taken from was about the size of a grain of sand and contained about one hundred thousand neurons with nearly a billion synapses. From the “ Allen Institute for Brain Science” and “ The Quest to Unravel The Connectome “.