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(A) Release curves of Herceptin from the hydrogel systems with different mix proportions in phosphate-buffered saline (PBS) at 37 ºC. The concentration of polymer mixture was 25 wt%, and the drug concentration was 5 mg/mL. (B) Release curves of Herceptin from the mixture-A hydrogel systems with different drug concentrations in PBS at 37 °C. The concentration of polymer mixture was 25 wt%.
