Table 1.

Induction of apoptosis and necrosis of MG63 cells by various concentrations of butyrate as analyzed by PI and annexin V flow cytometry (n = 4). No statistically significant difference was noted between groups. LL (lower left).

Quadrant	Control	8 mM Butyrate	16 mM Butyrate	24 mM Butyrate
UR	0.85 ± 0.10	1.25 ± 0.19	1.28 ± 0.2	1.43 ± 0.40
UL	4.19 ± 1.12	4.19 ± 0.57	4.24 ± 0.51	4.79 ± 0.33
LR	0.41 ± 0.06	0.86 ± 0.21	1.05 ± 0.30	0.75 ± 0.24
LL	94.54 ± 1.05	93.69 ± 0.31	93.41 ± 0.18	93.02 ± 0.36