Table 1. Percentage of all the labelled cells that are in the suprabasal layers 24 hours after BrdU injection.

Calculation of % of labelled cellsthat are in the suprabasal layers	Mean Percentage ± SEM (N)		P-value
	Wild-type	Pax6+/−
SLI ×100/(SLI+BLI)	18.23±1.64 (7)	40.03±3.93 (10)	P = 0.0003
ASLI ×100/(ASLI+BLI	26.20±1.93 (7)	38.01±3.72 (10)	P = 0.0144

Abbreviations: ASLI = adjusted suprabasal labelling index; BLI = basal labelling index; SLI = suprabasal labelling index. P-value is for t-test with Welch’s correction for unequal variances.