Radiation-induced changes in NHP cytokines. NHPs were exposed to various doses (5.0, 5.8, 6.5, or 7.2 Gy) of 60Co γ-irradiation. Blood was collected at various time points post-irradiation, and cytokines were analyzed using Multiplex Luminex. The data for each time point are shown as the mean ± standard error for each radiation group. *indicates the time points when the radiation dose dependent first order correlation were significant and when equal variance between groups were assumed (p ≤ 0.05, n = 8 for 5.8, 6.5, 7.2 irradiated groups and n = 4 for the 5.0 Gy radiation group).