Extended Data Fig. 1: Expression of the canonical markers.

a, UMAP embedding of selected canonical markers shown in Fig. 1c. b, Scaled expression (log₂-transformed fold change, log₂FC) of selected canonical markers shown in Fig. 1c. c, Expression (log₂FC) of marker genes from Fig. 1c in each source highlighting that the same marker genes are used for identification of the same cell types in both cells and nuclei. d, Multiplexed smFISH staining of cell type-specific transcripts from Fig. 1e in right ventricles (top): TTN (green, cardiomyocytes) and CDH5 (red, EC) right atrium (middle): NPPA (green, aCM) and DCN (red, FB) and LA (bottom): MYH11 (green, SMC) and KCNJ8 (red, pericytes), nuclei are DAPI-stained (dark blue). Scale bars, 20 μm. For details on statistics and reproducibility, see Methods.