Table 1.

The areas (mm²) of the EGL and the GL

Age	Layer	p27+/+	p27−/−
P16	EGL	0.031  ± 0.009	0.054  ± 0.016*
	GL	1.294  ± 0.249	1.564  ± 0.345
P21	GL	1.352  ± 0.196	1.603  ± 0.160*

The areas of the EGL and the GL were measured in digitized images of the medial sagittal sections of the cerebella from wild-type (p27+/+) and p27−/− mice using the NIH Image 1.62 image analysis program. The EGL of the P16 p27−/− mice was significantly larger than that of the P16 p27+/+ mice (^*p < 0.05;t test), and the GL of the P21 p27−/− mice was significantly larger than that of the P21 p27+/+ mice (^*p < 0.05; t test). Values are expressed as means ± SD.