Figure 2. PUFA levels increase in cancerous human breast tissue, as well as normal-appearing breast tissue from subjects diagnosed with invasive ductal carcinoma, compared with breast tissue from cancer-free subjects.

(a) Comparison of average Raman spectra of fatty acids from cancerous and normal-appearing tissue of cancer subjects, and from normal tissue of cancer-free subjects. (b–d) Density distributions of the degree of unsaturation of fatty acids from three groups of tissue samples: cancerous, normal-appearing, normal. (e) Quantitative analysis of of fatty acids in each tissue sample.