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Size-exclusion high-performance liquid chromatogram of a 24-h sample of a bevacizumab-loaded polyurethane implant (BPUI) that was incubated in phosphate-buffered saline (PBS) for the detection of bevacizumab at a flow rate of 1.0 mL/min (Waters BioSuite 250; 5 μm, HR SEC–7.8×300 mm). AU, absorbance unit (279 nm)×104.
