Fier - se gaseste predominant in proteinele animale, in special in carnea rosie si peste. Zinc - se gaseste in principal in sursele de proteine animala, cum ar fi, carnea de vita, carnea de miel si carnea de porc. Totodata, zincul este mai usor de absorbit in orgnism daca sursa sa provine de la animale.
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rolul proteinelor in organism