Figure 1.

Agglomerative hierarchical clustering analysis (AHCA) dendrogram of the ten adenoma samples investigated. Notice that: 5 of them fall within the healthy cluster (labelled H/B, in red, A), while the others are spread among the three cancer categories, namely follicular carcinoma, labelled FC (blue, C), papillary carcinoma, labelled PTC (green, B)), and follicular variant of papillary carcinoma, labelled FV-PTC (brown, D). HB.txt, FC.txt, PTC.txt, and FV-PTC.txt indicate the reference spectrum for each category.