Fig. 1From: The microbiome of diabetic foot ulcers: a comparison of swab and tissue biopsy wound sampling techniques using 16S rRNA gene sequencingBacterial abundance (qPCR) and sequence metrics for paired swab and tissue samples N = 20: a) number of copies of 16S rRNA gene /μl (sqrt transformed); b) swab and tissue biopsy 16S/18S ratios; c) richness (number of distinct OTUs) rarefied to 1500 reads; and d) standardised Shannon’s H indexBack to article page