(A). Top: tSNE projection of all cells from healthy pediatric human ileum within a previously-unpublished 10x 3′ v2 dataset (115,569 cells). Black: higher expression of ACE2 (left), TMPRSS2 (right). Bottom: Corresponding violin plots of expression values for ACE2 (left) and TMPRSS2 (right). Solid line: epithelial cells.