ASO	antisense oligonucleotides
Bmp	bone morphogenetic protein
cDNA	complementary DNA
CFs	cardiac fibroblasts
CMs	cardiomyocytes
EE	embryonic epicardium
EMT	epithelial-to-mesenchymal transition
EPDCs	epicardial derived cells
FBS	fetal bovine serum
Fgf	fibroblast growth factor
GO	gene ontology
HH	Hamburger and Hamilton
HRP	horseradish peroxidase
lncRNA	long non-coding RNA
PBS	phosphate-buffered saline
PBST	phosphate-buffered saline with Tris
PE	proepicardium
RT-qPCR	reverse transcriptase–quantitative polymerase chain reaction
SCRINSHOT	Single cell-resolution in situ hybridization on tissues