Figure 2

PLS analysis of oesophageal tissue mass fingerprinting. (a) Score plots for PLS1 and PLS2; (b) A 3D model to distinguish oesophageal cancer tissue from normal tissue; (c) Loading plots for PLS1 in PLS from the training set. (d) Loading plots for PLS2 in PLS from the training set. The plots illustrate the m/z values and their relative importance in the PLS analysis.