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Cumulative release profile of the drugs from microparticles containing (a) 3 mg vancomycin (b) 5 mg vancomycin (c) 1.5 mg cefazolin (d) 2.5 mg cefazolin, encapsulated (represented by e) and coated (represented by c) onto it. These microparticle were immersed in PBS buffer of pH 7.4 at 37 °C and samples were collected at pre-determined time intervals. Each data point is mean ± standard deviation (n = 3).
