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A, Bars represent means for relative frequency of segmented filamentous bacteria (Candidatus arthromitus). Each bar represents the mean of 9-31 animals per genotype per background and the SE is plotted as error bars. B, Relative frequency of species level microbes in ileum mucosa of DA, Lewis and Fischer transgenic and wild-type rats. Each bar represents the mean of 9-31 animals per genotype per background.
