Table 8.

Neurite Length and Migration Indices of Cerebellar Granule Cells

	Neurite length	Migration index
	μm
tau+/+map1b+/+	652 ± 14	0.42 ± 0.03
tau−/−map1b−/−	531 ± 12	0.37 ± 0.03

Neurite length is defined as the average length of the longest neurite on each aggregate. The migration index is defined as the ratio of the number of neurons that migrated beyond one-third of the neurite length to the total number of migrating neurons. The means ± SEM are shown. Three animals of each genotype were used, and 35 tau+/+map1b+/+ and 33 tau−/−map1b−/− clusters were examined.