PSMC2 and osteosarcoma: Consequently, knockdown of PSMC2 expression in SaoS-2 osteosarcoma cells and MG-63 osteosarcoma cells was ready to suppress cell growth rate determined by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) and fluorescence microscope during five-day cultures (Figure 4).