Vitamins and Coenzymes
Models of end-linked Osaka VI Fibrinogen dimers, a bilayer dimer is linked at

both ends by two disulfide bonds
either end via a single disulfide bond
both ends by one disulfide bond
either end via two disulfide bonds

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Vitamins and Coenzymes
The vitamin riboflavin, which occurs as a yellow pigment in egg yolk and milk become

more deep in color on oxidation and regained its color on reduction with Zn in acid
colorless on reduction with Zn in acid and regained its color on re-oxidation
more deep in color on reduction with Zn in acid and regained its color on re-oxidation
colorless on oxidation and regained its color on reduction with Zn in acid

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