Table 9.

Measure of color intensity on samples after single/repeated exposure

Non-irradiated/irradiated	Number of exposure
	Single	Repeated exposure
Control	148 ± 2	141 ± 2
Irradiated	152 ± 1*,$	141 ± 1

The optical density values were compared two-way ANOVA differences between number of exposure × non-irradiated/irradiated rats and a posteriori Bonferroni test. For multiple comparisons, differences considered significant at p ≤ 0.05.

^*Indicates significant differences between single control and irradiated animals.

^$Indicates significant differences between animals subjected to single and repeated exposure.