TP53 and neoplasm: We sought to corroborate YB1 RNA levels with corresponding protein expression data by immunoblotting cell lysates from NeurD2-SmoA1 primary SHH mouse MB cells (MBCs), a TP53 null PTCH receptor-deficient spontaneous SHH tumor mouse derived MB cell line (Pzp53Med19), human SHH MB cell lines (Daoy, UW228, and ONS-76), and human Group 3 and 4 MB cell lines (D341, D556, BT52, D283, and CHLA01).