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Dark toxicity established using MTS assay of free mTHPC and mTHPC loaded in P23 or EGa1-P23 micelles (at 1 mg/mL polymer) at varying mTHPC loadings on A431 and HeLa cells after 7 (A) and 24 h (B). In the legend, “competition” represents mTHPC loaded in EGa1-P23 micelles coincubated with free EGa1, while “free mTHPC+EGa1” indicates free mTHPC coincubated with free EGa1.
