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. 2007 May 22;3:112. doi: 10.1038/msb4100153

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Copyright © 2007, EMBO and Nature Publishing Group

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits distribution, and reproduction in any medium, provided the original author and source are credited. This license does not permit commercial exploitation or the creation of derivative works without specific permission.

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O-PLS-DA coefficient plots derived from ¹H NMR spectra. O-PLS-DA coefficient plots derived from ¹H NMR CPMG spectra of plasma (A), ¹H MAS NMR CPMG spectra of liver (B) and ¹H NMR spectra of urine (C) and ileal flushes (D) indicating discrimination between conventional (negative) and HBF-colonized mice (positive). The O-PLS-DA coefficient plots are presented using a back-scaling transformation, as described previously (Cloarec et al, 2005b), which allows each variable to be plotted with a color code that relates to the significance of class discrimination as calculated from the correlation matrix. Arg, arginine; Asp, aspartate; Asn, asparagine; CA, cholic acid; Gln, glutamine; Gsh, glutathione; GPC, glycerophosphorylcholine; IAG, indoleacetylglycine; Lys, lysine; Nac, N-acetyl-glycoproteins; PAG, phenylacetylglycine; TCA, taurocholic acid; TβMCA, Tauro β muricholic acid; TUDCA, tauroursodeoxycholic acid.