Figure 2

Spectral characteristics of collagen data in ECM3 and non-ECM3 tumors. (a) Mean absorbance across full spectral range. The average spectrum of the non-ECM3 group has been offset by adding 0.01 to the data for clarity. (b) Mean absorbance across spectral range between 872 cm⁻¹ and 1320 cm⁻¹ that was used for training and 5-fold cross validation. Non-ECM3 spectrum has been offset by adding 0.01 to the data for clarity.