Figure 4 shows confocal Raman spectroscopy analysis of the human adenocarcinoma cell line (invasive ductal cancer (AU565)), receptor expression: epidermal growth factor (EGF), Oncogene: her2/neu+ (overexpressed); her3+; her4 +; p53+), microscopy image, Raman image from the cluster analysis: nucleus (red), endoplasmic reticulum (blue), lipid droplets (orange) cytoplasm (green), mitochondria (magenta), cell border (light grey), area out of the cell (dark grey), at the 532 nm wavelength excitation. This evidence concerns the gene ERBB2 and adenocarcinoma.