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Development (2002) 129 (8): 1849–1858.
Published: 15 April 2002
... with this inference, spontaneous oxidation of dopa produces a gray (black) pigment, whereas oxidation of dopamine and NBAD produces brown and tan pigments, respectively (J. R. T., unpublished). We have also found that incubation of dopa, dopamine or NBAD with phenoloxidase, an enzyme required in vivo...