Figure 3. Analysis of the CDKN1A expression levels in GBM tissues and cell lines. (A, B) The mRNA expression of CDKN1A in GBM tissues was detected by using the GEPIA and GlioVis databases. (C) the Human Protein Atlas project showed representative immunohistochemical images of CDKN1A in GBM tissues compared with surrounding normal tissues. (D) The expression levels of CDKN1A in GBM cell lines was detected by using the CCLE database.