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Profiles of doxorubicin release from microcapsules at (a) pH 6.0 and (b) pH 7.4 during 48 h and profiles of the initial drug release during the first 6 h of incubation at (c) pH 6.0 and (d) pH 7.4. Asterisks mark the data that significantly differ from one another (p < 0.05, Student’s t-test).
