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Column 1 is the saline control, Column 2 is the bolus injection of doxorubicin after 4 h, Column 3 is the 50:50 PLGA implant after 4 h, Column 4 is the 50:50 PLGA implant after 21 days, and Column 5 is the 85:15 PLGA implant after 21 days.
