Variance analysis of white blood cell (WBC) results. Variance analysis was performed to determine which experimental factor(s) significantly affected the WBC counts in the animals 3 hours after irradiation (A) or 48 hours after radiation exposure (B). Radiation type (γ-rays vs. protons) did not significantly affect the overall WBC counts after radiation exposure whereas the dose rate did have an effect at 3 hour post-exposure, and total dose also contributed significantly to WBC count changes in the irradiated animals at both 3 hours and 48 hours after exposure. Note: the x-axes labels are included at the top of each panel, i.e., Radiation, Dose Rate, or Dose.