This image shows expression levels of protein kinase Cγ (PKCγ, green) in cerebellar Purkinje cells (labeled with the GABA-synthesizing protein GAD67, red) in a postnatal day 60 mouse. 3-Phosphoinositide-dependent protein kinase-1 is required to maintain PKCγ expression and dendritic arbors in Purkinje cells. For more information, see the article by Liu, Xu et al. (pages 5531–5548).