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. 2015 Sep 22;5:14316. doi: 10.1038/srep14316

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(A) Similarities between the ¹H NMR spectra of reference polysaccharides and polysaccharides extracted from various anaerobic granules (AnG) represented by non-parametric multidimensional scaling. Stress = 0.07; values < 0.1 indicate an acceptable representation of the structure of the data set by the ordination⁴². (B) Hierarchical clustering of the ¹H NMR spectra of reference and granular sludge polysaccharides based on Bray-Curtis similarity. The cophenetic correlation coefficient, which indicates the validity of the cluster information, was 0.88; values higher than 0.8 are considered to represent well the pattern of similarities⁴³,⁴⁴.