Figure 10 showsthe average normalized Raman intensity of cytochrome c at 1582 cm–1 in mitochondria of breast cancercells: triple-positive HER2MCF-7 (B), HTB-30, and AU-565 (C) overexpressingHER2, the normal cells MCF-10A (HER2 at the normal level), and triple-negativeaggressive breast cancer MDA-MB-231. Here, ERBB2 is linked to breast cancer.