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Validation of the electroelution procedure. Prestained protein MW markers (70 and 55 kDa) were excised from an acrylamide/bisacrylamide 16% gel. After elecroelution, samples were cleaned from SDS residues by ultrafiltration (MWCO 3 kDa) with 20% v/v ethanol. Samples were vacuum dried, resuspended with Laemmli buffer and separated by SDS-PAGE. First lane: 55 kDa marker; second lane: 70 kDa marker.
