Fig. 2From: Mucosal and salivary microbiota associated with recurrent aphthous stomatitisDysbiosis index of RAS. A dysbiosis index was defined as 5.35 × [A. johnsonii] - 0.309 × [S. salivarius] using the relative abundance of A. johnsonii and S. salivarius in the mucosa where 5.35 and -0.309 are the regression coefficients. The dysbiosis index of 18 control samples and 18 RAS samples are shown. The dotted line indicates cutoff for RASBack to article page