Immunocytochemistry analysis diluted at 1:4 and staining in Hela cells(treated with 30mM sodium butyrate for 4h) performed on a Leica BondTM system. The cells were fixed in 4% formaldehyde, permeabilized using 0.2% Triton X-100 and blocked with 10% normal Goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a biotinylated Secondary antibody and visualized using an HRP conjugated SP system.