Fig. 2

Dimension discrimination of Raman spectral data for cancer groups versus healthy controls. Violin plots show intensity distributions at 10 typical Raman peaks of A LC,  B CRC, C GC, D HCC, E ESCA or F mixture cancer group vs healthy control group selected by SERS-AICS. The middle dash lines indicate median value of the Raman intensities of each corresponding peak while the upper and lower dotted lines indicate intensity values of first quartile and third quartile. White represents healthy control group while the other colors represent different cancer type or mixture group