Additional file 1: Fig. S1. a Uptake of FAM-labeled, complexed (red) or uncomplexed antimiRs (blue) in PC3 cells, as determined by flow cytometry. Histograms and scatter plots show the direct comparison (upper panels). The lower panel reveals the absence of any uptake of uncomplexed antimiR, since results are indistinguishable from untreated cells (black, lower left). b Determination of cell viability upon treatment of PC3 cells with complexed (left) vs. uncomplexed antimiRs (right).