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In vitro cytotoxicity of all formulations evaluated using MCF-7 cells by MTT assay [44] (n = 3). The MCF-7 cell line was incubated for 72 h with HSA (dark blue), pTFT (red), PFT-Hcy-HSA-Cy7-pTFT (green), alb-TFT-AuNP (violet), HSA-Cy5-Hcy-TFAc-B12H12 (cyan), and alb-boron-AuNP (orange) loaded at various concentrations. Cell viability was normalized using the cells treated with a PBS buffer as a 100% viability control.
