Fig. 2
From: Comparison of sampling methods in assessing the microbiome from patients with ulcerative colitis
Comparison between sampling methods (a) averaged taxonomic compositions at phylum level for stool, lavage, and biopsy sample. b Boxplot of Alpha-diversity.in the three study groups stool, lavage, biopsy by means of observed Operational Taxonomic Units (OTUs), Shannon, and Simpson indexes. Plotted in the graphic are the inter-quartile ranges (IQRs) and boxes, medians (lines in the boxes), and lowest and highest values for the first and third quartiles. Each phenotypic category is identified by colors, as indicated on the right side of the figure. Every sample is represented by a colored dot. Solid lines and asterisks indicate that the numbers of OTUs in biopsy sampling was significantly higher than stool sample (p = 0.031) and lavage (p < 0.006). In the diversity of Shannon and Simpson, stool sample was significantly different with biopsy and lavage sample. c Boxplot of Beta diversity (stool, lavage, biopsy). All sampling method in the Beta-diversity was significantly different with each other