Single-cell RNAseq analysis of coronavirus receptors in the human and murine ovary. UMAP-based dimensionality reduction plot denoting cell types (A, C) and corresponding expression levels of ACE2, DPP4, ANPEP and TMPRSS2 (B, D) from multiple studies: (A–B) adult human ovary (Fan et al., 2019), and (C–D) murine ovary from Mouse Cell Atlas (Han et al., 2018).