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(a) Eumelanin and pheomelanin, compared with pigments in biopsied human tissue.122 (b) Response to chemical oxidation115 and (c) molecular weight.115 (a) Reproduced from Mathews et al., Sci. Transl. Med. 3, 71ra15 (2011). Published by the American Association for the Advancement of Science; (b) and (c) reproduced from Simpson et al., J. Phys. Chem. A 118, 993 (2014). Copyright 2014 American Chemical Society.
