Figure 7B shows the data for 1584 cm−1 band of reduced cytochrome c for breast normal (G0) and cancer (invasive ductal cancer) human tissue (G1, G2, G3). Based on the average values (number of patients n = 39) obtained for the Raman biomarker of cytochrome c I1584 we obtained a plot as a function of cancer grade malignancy. The gene discussed is CYCS; the disease is cancer.