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Figure 2. Transfection efficiency in siRNA transfected NICC. NICC were transfected with the BLOCK-iT™ Fluorescent Oligo (FITC-conjugated) and transfected NICC were identified as FITC-positive cells. Data represent one of five independent experiments and mean fluorescence intensity of FITC positive cells is presented as mean ± SEM. Open histogram represents non-transfected NICC and filled histogram represents NICC transfected with the BLOCK-iT™ Fluorescent Oligo 64 MFI = 3.3 0.3 Cell counts 69.2% 8.7% MFI = 35.5 2.0 0 100 101 102 103 104 Fluorescence intensity Supplemental Digital Content 2