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MTT to analyze the effects of varying concentrations of PAMAM on the metabolic activity of HeLa cells. The cells incubated with PAMAM only showed the least amount of metabolic activity, while a definite increase was observed in those cells incubated with PAMAM:MnO. The cells incubated with the RNA: PAMAM:MnO and pDNA:PAMAM:MnO complexes proved to be significantly more metabolically active than the other two samples.
