Cover legend: The cerebellum is composed of various neuronal and glial subtypes, as indicated by calbindin immunostaining of Purkinje cell neurons (red), GFAP immunostaining of Bergmann glia (green), and DAPI staining of granule cell neuron nuclei (blue). Spinocerebellar ataxia type 7 pathogenesis involves alterations in several cerebellar cell types. For more information, see the article by Furrer et al. in this issue (pages 16269–16278.).