Supplementary Figure 1: IR spectra of the same type of samples measured by different ATR-FIR spectrometers at the same institution.
From: Standardization of complex biologically derived spectrochemical datasets
a–d, Average (a) raw and (b) preprocessed spectra for healthy control samples, and average (c) raw and (d) preprocessed spectra for cancer samples across three different instruments (A, B and C).
