Localization of αDB and βDB RNA in cerebellum. In situ hybridization to sections of wild-type cerebellum with probes specific for αDB (A) or βDB (B). A′ and B′ show high-magnification views of areas in A and B. αDB RNA is present at highest levels in Bergmann glial somata, which flank Purkinje cell (P) somata. βDB RNA is present at highest levels in Purkinje cell bodies. Two Purkinje cell somata are outlined by dotted lines. Scale bar: A, B, 20 μm; A′, B′, 10 μm.