TABLE 1.

Myocardial volumes of Sp3^−/− hearts during development

E	Myocardial vol (mm3)				t test P value
	WT		Sp3−/−
	Mean (n)	SD	Mean (n)	SD
10.5	0.048 (5)	0.0092	0.021 (5)	0.0074	0.033
12.5	0.20 (5)	0.032	0.14 (6)	0.030	0.011
14.5	0.84 (5)	0.098	0.37 (5)	0.080	0.036