Source: Recombinant protein corresponding to aa38-246 from mouse B7-1, fused to FLAG-Avi-His-Tag at C-terminal, expressed in a HEK293 cells. Molecular Weight: ~28kD Applications: Other applications not tested. Assay Conditions: Follow assay protocol of Mouse CTLA4:B7-1 TR-FRET Assay. Recommended Dilution: Optimal dilutions to be determined by the researcher. Storage and Stability: Aliquot to avoid repeated freezing and thawing and store at -70C. Aliquots are stable for 6 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.