extremely significantp < 0.001
Compared with the rates at1 and 7 days after irradiation, the decrease at 21 and 35 days after irradiation was extremely significant (all p < 0.001).
Compared with the rates at1 and 7 days after irradiation, the decrease at 21 and 35 days after irradiation was extremely significant (all p < 0.001).