a, Brain vascular expression of genes relevant to SARS-CoV-2 brain entry, as summarized in Iadecola, et al. 202078.
b, Expression of the mouse perivascular fibroblast-like gene Spp1 is instead specifically expressed in human myeloid cells and oligodendrocytes (SPP1, top)79.
c, No expression of the immuno-oncology target CD19 and its chaperone CD81 across human adult brain pericytes and smooth muscle cells80. Note: cells with any finite expression are ordered to the front to ensure all expression is visible, but this carries the potential to visually overestimate average expression