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mRNA expression of IL-1β, IL-6 and TNF in the Colon of DA rats in the following groups: untreated controls, short term course of radiotherapy (Weeks 1 - 3), long term course of radiotherapy (Weeks 4 - 6). Data are expressed as mean + SEM. There was a significant increase in both IL-1β and TNF expression between short term and long term radiotherapy groups (p < 0.05).
