Demonstrating cerebral vasculature in Nissl-stained sections from mouse hippocampus. Arrow and asterisk in A refer to the CA1 pyramidal cell and dentate gyrus granule cell layers, respectively. Arrowheads in A point to large vessels at the hippocampal fissure. B–D, Examples of putative pericytes in close association to vessels found at the hippocampal fissure. Arrowheads in C–D refer to pericytes shown in insets. Scalebars in A–D in microns: 125, 42, 25, 25, respectively.