ab9050 staining Histone H3 (tri methyl K36) in MCF-7 cells. The cells were incubated with 15µM Methylstat (ab144566) for 24 hours (Treated) or solvent-only for control purposes (Non-treated). Cells were fixed with 100% methanol (5min) 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 ab9050 at 0.1µg/ml and ab195889 Mouse monoclonal [DM1A] to alpha Tubulin - Alexa Fluor® 594 at 2µg/ml (shown in pseudo colour red) overnight at +4°C, followed by a further incubation at room temperature for 1h with an AlexaFluor®488 Goat anti-Rabbit secondary (ab150081) at 1/1000 dilution (shown in green). Nuclear DNA was labelled in blue with DAPI. Negative controls: 1– anti-rabbit secondary only (solvent only); 2 – anti-rabbit secondary only (Treated). The secondary antibody control demonstrates that the labelling observed is due only to the binding of the secondary antibody to the primary antibody