Paraformaldehyde-fixed, paraffin embedded (Mouse brain); Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15min; Block endogenous peroxidase by 3% hydrogen peroxide for 20 minutes; Blocking buffer (normal goat serum) at 37°C for 30min; Incubation: Anti-SLC25A33 Antibody, conjugated (SL19814R-FITC) 1:400, 1.5 hours at 37°C; DAPI (5ug/ml, blue, SLC0033) was used to stain the cell nuclei.