ab194985 staining Nrf2 in HeLa cells. The cells were fixed with 100% methanol (5 min), permeabilized in 0.1% Triton X-100 for 5 minutes and then blocked in 1% BSA/10% normal goat serum/0.3M glycine in 0.1%PBS-Tween for 1h. The cells were then incubated with ab194985 at a working dilution 1/100 (shown in red) and ab195887, Mouse monoclonal [DM1A] to alpha Tubulin (Alexa Fluor® 488, shown in green) at 2µg/ml overnight at +4°C. Nuclear DNA was labelled in blue with DAPI.This product gave a positive signal in 4% formaldehyde (10 min) fixed HeLa cells under the same testing conditions.Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8).