Fig. 6

PAMAM-G7 cytotoxicity to NIH 3 T3 cells measured by MTT survival assay in 48 h and 72 h with 0.002% benzalkonium chloride (bac) as the positive control. Percent survival of NIH 3 T3 cells upon treatment with PAMAM-G7 at various concentrations is based on an untreated control. The data show the mean from two separate experiments (48 h and 72 h) with three replicates per condition, and the error bar represents a standard deviation