Fig. 1

Shannon diversity indices for the microbial communities of Crohn’s disease aphthous ulcers and adjacent mucosa, and healthy control mucosa. Shannon Diversity Indices for the microbial communities of Crohn’s disease aphthous ulcers and macroscopically normal adjacent mucosa, and healthy control (Non-IBD) mucosa. The means and 95% CIs for each sample are depicted. There is no significant difference in the diversity of healthy control mucosa and Crohn’s disease mucosa or aphthous ulcers (ANOVA: F_(1,27) = 0.0576, p > F = 0.8125). NM non-IBD normal mucosa from healthy controls without inflammatory bowel disease, NM CD adjacent normal mucosa from patients with Crohn’s disease, AU CD aphthous ulcers from patients with Crohn’s disease