719858.fig.003a
(a) a = control 
719858.fig.003b
(b) b = 3 h
719858.fig.003c
(c) c = 6 h
719858.fig.003d
(d) d = 12 h
719858.fig.003e
(e) e = 12 h +NAC
719858.fig.003f
(f)
Figure 3: Flow cytometry analysis of apoptosis in HepG2 cells treated with 40 μM alantolactone for various time points. (a) Control, ((b), (c) and (d)) cells were treated with 40 μM alantolactone for 3, 6, and 12 h, respectively. (e) cells were treated with 40 μM alantolactone in the presence of 3 mM NAC for 12 h. (f) Data are expressed as mean ± SD ( ). Columns not sharing the same superscript letter differ significantly ( ).