ab192466 staining Choline Acetyltransferase in SKNSH cells. The cells were fixed with 4% formaldehyde (10 min), permeabilised 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 ab192466 at a working dilution of 1 in 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 100% methanol (5 min) fixed SKNSH cells under the same testing conditions.Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8).