A–B. In situ hybridization for Hedgehog target gene Gli1 in postnatal day 6 control (A–A′) and Lkb1cko (B–B′) cerebella. C. Western blot for Gli1 in GCPs derived from control and Lkb1cko cerebella. Lkb1 and Actin were used to verify knockdown and loading, respectively. D. Densitometric measurements of Gli1 protein levels relative to Actin. E. Quantitative real-time PCR for Gli1, Ptch1, and Hhip1 in freshly isolated control and Lkb1cko GCPs. n=3, no significant difference, Student’s t-test. F. Western blot for Gli1 in cultured GCPs derived from control and Lkb1cko cerebella in the presence (+) or absence (−) of 20nm SAG. G. Western blot for Gli1 in whole cerebella derived from control and Gli1−/− mutants. Scalebar 50 μm. Con = control, EGL = external granule layer. Full-length blots are shown in Supplementary Figure 9.