close to significancep value = 0.067
Comparing irradiated untreated rats with irradiated treated rats at 12 months shows, for the treated irradiated rats compared to the irradiated rats, a significant decrease in Grade 1 of 13.5% ( p value = 0.041), and an increase close to significance in Grades 2 and 3 is observed for the untreated rats (8%, p value = 0.067 and 7.5% p value = 0.082 respectively).