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PC3 cell uptake assay. Uptake of [18F]FDG amine 2 is increased at pH 6.5, while uptake of [18F]FDG and [18F]FDG oxime 6 is not. Cell uptake was normalized to the number of viable cells, and is expressed as % cell uptake over 106 cells. * denotes that the difference is statistically significant with a p value <0.01.
