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  • Title: Dopa and 5-S-cysteinyldopa in the serum of albino, black, and red guinea pigs.
    Author: Hansson C, Agrup G, Rorsman H, Rosengren E.
    Journal: Acta Derm Venereol; 1980; 60(2):155-56. PubMed ID: 6155023.
    Abstract:
    Dopa and 5-S-cysteinyldopa levels in serum of albino, red, and black guinea-pigs were quantified. The levels of both amino acids were lower in the albino than in the pigmented animals. It is suggested that the serum levels of dopa and 5-S-cysteinyldopa in pigmented animals reflect tyrosine and dopa oxidation activity in the melanocytes.
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