CD151 and nonpapillary renal cell carcinoma: Cell viability assays were performed in ccRCC cell line 786O after transfection with si-CDK1, si-RNASEH2A, and si-CD151, which showed comparable results to the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays (Figure 4).