Figure 2 shows the average Raman spectra of the ex vivo human breast cancer tissue surgically resected specimens, ductal cancer, grade of malignancy WHO G3 at different excitations 532 nm, 633 nm, 785 nm, (number of patients n = 5), and Raman spectrum of the pure cytochrome c at 532 nm excitation. Here, CYCS is linked to breast carcinoma.