Presenilin 1 Antibody detects endogenous levels of the carboxy-terminal fragment of presenilin 1 (~22 kD). The antibody detects the full length protein (55k Da) to a lesser extent. Western blot image shows extracts from HeLa (1), SK-N-MC (2) and COS (3) cells probed with Presenilin 1 antibody. Applications: Suitable for use in Western Blot and Immunoprecipitation. Other applications not tested. Recommended Dilution: Western Blot: 1:500, Immunoprecipitation: 1:100, Optimal dilutions to be determined by the researcher. Storage and Stability: For long-term storage, aliquot and store at -20°C. Aliquots are stable for at least 12 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.