Store at 2-8 degree C for short term. Long-term storage at -20 degrees C. Preparing antibody stock solutions is recommended before freezing. Antibody stock solutions can be prepared by diluting antibody at 1-10 ug/ml in 1% BSA/PBS, aliquoting into vials and storing frozen at 20 degrees C. Avoid repeated freeze/thaws. If the working solution is under 1 ug/ml and stored at 4 degrees C, use within 24 hours after preparing working solutions of 1 ug/ml or less.