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Dual targeted AuNPs efficacy in killing U87 cells. (a) Cell morphology of U87 cells treated with 500 nM of (EGFpep+Tfpep)-AuNPs-Pc 4 versus standard of care free Pc 4 at 0 or 1000 nM Pc 4 for 4 h and either unactivated (dark) or activated (light) by light (670 nm, 0.83 J cm−2 s−1). (b) Cell viability was quantified after 4 h using flow cytometry.
