3D	3-dimentional
ACTC	α-cardiac actin
AP	action potential
BAC	bacterial artificial chromosome
BRY	T-box transcription factor brachyury
CaM	Ca2+-modulating protein
cGATA6	chick GATA6
ChR2	channelrhodopsin 2
CMs	cardiomyocytes
CPCs	cardiac progenitor cells
CRISPR/Cas9	clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR associated protein 9 (Cas9)
CT	Ca2+ transient
CX43	connexin 43
DSB	double strand break
ESCs	embryonic stem cells
FACS	fluorescence-activated cell sorting
FHF	first heart field
FP	fluorescent protein
GECIs	genetically encoded Ca2+ indicator
GEVIs	genetically encoded voltage-sensitive indicators
GOI	gene of interest
HCN4	hyperpolisation-activated cyclic nucleotide gated K+ channel 4
hESC-CMs	human embryonic stem cell-derived cardiomyocytes
hESCs	human embryonic stem cells
hiPSC-CMs	human induced pluripotent stem cell-derived cardiomyocytes
hiPSCs	human induced pluripotent stem cells
hPSC-CMs	human pluripotent stem cell-derived cardiomyocytes
HR	homologous recombination
iPSCs	induced pluripotent stem cells
IRES	internal ribosomal entry sites
ISL1	insulin gene enhancer protein
Kdr	kinase insert domain receptor
mESCs	mouse embryonic stem cells
MESP1	mesoderm posterior basic helix-loop-helix transcription factor 1
miPSC-CMs	mouse induced pluripotent stem cell-derived cardiomyocytes
miPSCs	mouse induced pluripotent stem cells
MYH6	α-myosin heavy chain
MYL2	myosin light chain 2
MYL7	myosin light chain 7
NCX1	Na+/Ca2+ antiporter
NKX2.5	NK2 homeobox 5
P2A	porcine teschovirus-1 2A
PSCs	pluripotent stem cells
RMCE	recombination-mediated cassette exchange
SHF	second heart field
SHOX2	short stature homeobox 2
SHS	safe harbour site
SLN	sarcolipin
T2A	Thosea asigna virus 2A
TALENs	transcription activator-like effector nucleases
TBX5	T-box transcription factor 5
TNNT	cardiac troponin
TTN	titin
VSFP	voltage sensitive fluorescent protein
ZFNs	zinc finger nucleases