Fig. 4.
Jejunal citrulline expressed as a function of day per IR dose. Day −7 corresponded to tissue samples from age-matched non-irradiated control mice 7 days prior to IR. Day 0 corresponded to tissue samples from age-matched non-irradiated control mice just prior to IR. Jejunal samples for day 6 at 14 Gy were not accessible due to euthanasia criteria and were sampled on day 5. Concentrations were expressed in pmol/mg of tissue as mean ± sem. Refer to Table S4 for tabulated values for concentrations, error, and number of independent tissue samples.