BCL2 and glioblastoma: Further, the percentage of cells expressing antiapoptotic marker Bcl‐2 was determined (Figure 3H), which was significantly decreased following the treatment with DIA 50 and DIA 100 in comparison with untreated cells (p = 0.007 and p < 0.001, respectively), suggesting a proapoptotic effect of DIA in glioblastoma cells.