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Figure 6. A: Bar chart illustrating growth inhibitory activity (GI50 values) of naked and apoferritin (AFt)-encapsulated temozolomide (TMZ) against U373V, U373M, SF188, HCT 116 cancer cell lines and MRC-5 fibroblasts. Means values ± SEM are shown if ≥ 3 independent trials; n = 4 per trial. B: Representative dose-response curves following exposure (6 d) of U373M cells to TMZ, AFt-TMZ or AFt alone