Fig. 2. Cecal nitrate plus nitrite content of the treatment groups described for Fig. 1. Indicates a significant difference (p < 0.05) in respect to all other groups. * Denotes p < 0.05 between the cathartic-treated and not treated rats, after recovery with ORS, combining the results of those animals consuming fluids with or without zinc. The number of rats in each group is indicated in the tables.