HEK293S-MSR1 cells were transfected with the PTGS agents Rhoi2, Rhoi725, Prislei-725HH16, and pUC-CELO-725HH16, as well as the control vectors pUC-VAI, Prislei-VAI, Rhoiscramble, and pUC-CELO, and later stained with SYTOX Green at 72 hrs post-transfection. SYTOX Green Fluorescence from a representative non-transfected cell sample (A), a cell sample transfected with Prislei-725HH16 (B), and after cell surface permeabilization of the non-transfected (C) and transfected (D) samples with saponin.