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Combining the sensitivity of the PATfix platform with the resolution of ultracentrifugation for AAV characterization

Density gradient ultracentrifugation (DGUC) is a well established tool for Empty/ Full AAV capsid separation based on density differences between AVV sub-populations. However DGUC practice is laborious and lacks any detection options, therefore fractions must be collected manually and analyzed later. Both of these shortcomings can be addressed by coupling post DGUC workflow to PATfix analytical system. BIA Separations PATfix platform provides sufficient tools for liquid extraction and fractionation as well as a comprehensive detector suite for precise fraction characterization. Baseline separation of capsid species was achieved in a density gradient of CsCl, producing a centrifugram that reveals information traditional DGUC and anion exchange chromatography cannot.