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Data represent mean for all animals of each group (n = 14). a p<0.05, arsenic group and fluoride + arsenic group vs. control group, respectively; b p<0.05, fluoride + arsenic group vs. fluoride group; c p<0.05, arsenic group vs. fluoride group; d p<0.05, fluoride group vs. control group; e p<0.05, fluoride + arsenic group vs. arsenic group.
