Table 1.

Number of Ki67 or TUNEL positive cells quantified based on respective fluorescent labelings

	Day 4		Day 7
	Ki67	TUNEL	Ki67	TUNEL
PPARβ+/+	12.3 ± 1.28	9.0 ± 2.0	5.1 ± 1.4	1.3 ± 0.8
PPARβ+/−	24.1 ± 3.13**	7.5 ± 1.2	10.3 ± 1.7*	15.1 ± 2.3*

Values represent the mean cell number counted from 10 standardized microscope fields per section (Fig. 7B, regions a to e and a′ to e′), performed on three different animals for each genotype ± SEM. Asterisks indicate that the difference is statistically significant (*P < 0.05; **P < 0.01).