Eight cell lines were transfected with control siRNAs targeting Cyclophilin B using RTF plates. Good cellular viability and effective target silencing were accomplished under optimized conditions. Gene knockdown is normalized to GAPDH expression. Cell plating densities are indicated in parentheses. Gene expression was determined 48 hours posttransfection by branched DNA assay (Panomics Quantigene® Reagent System) (blue bars). Cell viability was determined by alamarBlue® metabolic assay (gold circles).