Single-cell analysis of adrenal gland and kidney. (A) t-distributed stochastic neighbor embedding (TSNE) plot showing sub-clusters of kidney cells, (B) ACE2 and (C) TMPRSS2 expression in kidney from the adult and fetal groups. (D) TSNE plot showing sub-clusters of adrenal gland cells, (E) ACE2 and (F) TMPRSS2 expression in adrenal gland from the adult, neonatal and fetal groups.