Purkinje cell counts in BM-transplanted GS mice.

Purkinje cells were counted in recipient mice at 3 and 9 months after treatment and compared to 3- and 9-month-oldPPCA^−/−mice and age-matched controls. Purkinje cells were counted at 2 levels: (1) in the paravermis at the point where the lateral cerebellar nuclei first become obvious (M, medial), and (2) in the hemisphere at the level of the dorsal cochlear nucleus (H, hemisphere). The values are expressed as percentage of Purkinje cells counted in the control group.