(a)
(b)
(c)
(d)
(e)
Figure 2: The apoptotic cells are stained in bright green. Nonirradiated, nontreated tissue (a); irradiated, nontreated tissue (b); irradiated tissue treated with NAC (c); irradiated tissue treated with QYD (d); irradiated tissue treated with NAC-QYD shows no apoptotic cells (e).