Table 1 Treatment subgroups and models in the experiments.

Experiment and cell type	Transplantation
	Normal heart (n = 19)	Infarcted heart (n = 27)
A: Histology: Differentiation of transplanted cells
Cells: hESCs (n = 4), hEBs (n = 6)	5	5
Scaffold + cells: hESCs (n = 3), hEBs (n = 4)	4	3
Control: PBS (n = 4), PBS + scaffold (n = 2)	3	3
B: Histology: Fate and outcome of transplanted hESCMs into intact rat heart
hESCMs	7
C: Functional study: Transplantation of hESCMs after MI
hESCMs (n = 8), PBS (n = 8)		16

hEBs, human embryoid bodies; hESC, human embryonic stem cells; hESCM, human embryonic stem cell‐derived cardiomyocytes; MI, myocardial infarction; PBS, phosphate‐buffered saline.