SMAD3 and COVID-19: In contrast, many TFs were identified specifically as the top TFs in COVID-19 patients’ lung cell types, including SMAD3 in ciliated cells (Figure S15b), NFKB1 and JUN in dendritic cells (Figure S16b), PPARG in macrophage/monocyte cells (Figure S17b), and STAT3 in T cells (Figure S14b).