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A new instrumental concept for extraction of nanovolumes from open microchannels (dimensions 150 μm × 50 μm, length 10 mm) manufactured on silicon microchips has been used in combination with a previously developed method for preconcentrating proteins and peptides in the open channels through electromigration. The extracted nanovolumes were further analyzed using nanoelectrospray ionization (nESI)...
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