RACK1 and central nervous system cancer: For Western blot, we used 10 cases of normal brain tissues, 50 cases of low grade (I–II grade), and 30 cases of high grade (III–IV grade) malignancy glioma tissues, finding that the protein level of RACK1 was dramatically higher in high degree and low degree malignancy glioma tissues than in normal brain tissues (Figure 1C, ** p < 0.01, *** p < 0.001 as compared with normal brain tissues; Figure S1).