bradford assay molecular biology technique enables fast accurate quantitation protein molecules utilizing unique properties dye called coomassie brilliant blue g ref name ref coomassie blue undergoes visible color shift reddish brown bright blue upon binding protein ref name unstable cationic state coomassie blue background wavelength nbsp nm gives reddish brown color ref name ref coomassie blue binds protein acidic solution background wavelength shifts nbsp nm dye gives bright blue color ref name proteins assay
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