MYC and posterior cortical atrophy: In order to analyze the expression profile of mouse PCa stromal cells, we used the Gli1GFP/+ knock-in reporter line (Brownell et al., 2011) to isolate the subset of stromal cells undergoing HH signaling to compare the transcriptomes between PB-MYC PCa and normal prostate (∼45 weeks of age) using RNA-seq.