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. 2021 Jul 1;413(20):5095–5107. doi: 10.1007/s00216-021-03472-8

Fig. 4.

Fig. 4

PLS-DA regression coefficient plots for identification of spectral biomarkers in plasma, serum and urine. Key wavenumber regions have been marked with different colours. Top graphs: non-chemotherapy ovarian cancers (OC no chemo) versus all benign controls (controls). Bottom graphs: NACT ovarian cancers (OC chemo) versus all benign controls (controls). OC, ovarian cancers; chemo, chemotherapy; NACT, neo-adjuvant chemotherapy