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Use of a microfluidic chip to improve impurities removal. A schematic diagram and photos show the microfluidic chip with a reaction chamber in the dimension of 20 × 5 × 1 mm for holding MMPs during the fluidic flow under a fixed magnetic field (A). The gel photo shows a comparison of impurities removal between benchtop and microfluidic chip methods during cytochrome-c selection in serum and culture medium (B).
