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Native-PAGE analysis.
Notes: Lanes: 1, native rhEPO solution; 2, the mixture of blank PEG–PLA micelle with rhEPO; 3, blank PEG–PLA micelle; 4, rhEPO-loaded PEG–PLA micelle; 5, rhEPO-loaded PEG–PLA micelle destroyed by acetone.
Abbreviations: rhEPO, recombinant human erythropoietin; PEG–PLA, poly(ethylene glycol)–poly(d,l-lactide).
