showed a trendp = 0.063
The radiation treatment group (group 2) showed a trend towards lower eNOS mRNA expression than the control group (group 1 vs group 2, p = 0.063 after post hoc test), but daily PDE5I treatment lessened this decrease (group 2 vs. group 3, p = 0.063 after post hoc test) ( Fig 2C ).