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The Lowry protein assay is a colorimetric biochemical method used to quantify protein concentrations in a solution by measuring the reaction of proteins with copper ions and Folin-Ciocalteu reagent, which produces a blue color proportional to the protein amount. This technique is highly sensitive and widely used in research labs for protein analysis, though it can be interfered with by certain substances like detergents or reducing agents, making it less ideal for complex samples in modern applications.
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