Immunofluorescent analysis of GAPDH (red) in HeLa cells. Formalin fixed cells were permeabilized with 0.1% Triton X-100 in TBS for 10 minutes at room temperature and blocked with 1% Blocker BSA (Product # 37525) for 15 minutes at room temperature. Cells were probed with a DyLight 550-conjugated GAPDH monoclonal antibody (Product # MA5-15738-D550) at a dilution of 1:50 for at least 1 hour at room temperature. F-actin (green) was stained with DyLight 488 Phalloidin (Product # 21833) and nuclei (blue) were stained with Hoechst 33342 dye (Product # 62249). Images were taken on a Thermo Scientific ArrayScan or ToxInsight Instrument at 20X magnification.