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In vitro retention of Cyt C-HBPH NP’s cell associated peroxidase activity. A) MCF 7 cells treated (6 h) with Cyt C-HBPH nanoparticle displayed peroxidase activity when the cell pellet was dissolved in TMB solution, indicated that the protein was still active upon release within the cell. B) images showing the blue color of the oxidized TMB solution compared to untreated.
