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. Author manuscript; available in PMC: 2009 May 5.
Published in final edited form as: Bioconjug Chem. 2007 Aug 31;18(5):1498–1506. doi: 10.1021/bc700184b

Figure 4.

Figure 4

Preservation of enzymatic activity of catalase against degradation in BMM. A: “Naked” catalase or nanozyme (Z = 1) were loaded into BMM, and cells were washed and incubated with catalase-free media for various time intervals. The activity of catalase released from BMM was determined by spectrophotometry. B: Catalase polyion complexes with various compositions (Z) were loaded into the cells and incubated in catalase-free media for 2 h. Then, the media was collected and assessed for catalase activity by spectrophotometry. Data represent means ± SEM (n = 4). Statistical significance of nanozyme activity compared to catalase alone is shown by asterisks: (*) p < 0.05, (**) p < 0.005.