Figure 4. Viable, apoptotic, and "apoptotic necrotic" or necrotic cells induced by various concentrations of TEGDMA after 24 hrs. The diagram shows the results of the FACS analysis of 3 independent experiments (means ± SD). normal viable HGF; apoptotic HGF; necrotic and/or "apoptotic necrotic" HGF. ** p < 0.01; statistically significantly different compared with negative controls.