Product Specifications: Item# 90020: Recombinant LeptospiraComposite L2 Antigen OmpL1-MLP17-LigA (E.coli) Concentration: See Vial Mass/vial: See vial Volume/vial: See Vial Diluent: 50mM Tris, 50mM NaCl, pH9, 10%Glycerol Purity: Approx. 98% Stabilizer: None Preservative:None Storage: -75°C Physical State: Frozen Liquid Stability: 2 years at -75°C Application: In-Vitro Diagnostics, Immunization. Description:Full length Recombinant Leptospira Composite L2 antigen- LipL32-LipL41-produced in the E.coli Expression System. Purification:This protein is purified by solvent extraction, preparative electrophoresis and fusion tag affinity immuno-chromatography (proprietary) to >98% purity, as determined by SDS-PAGE, reduced Approx. Molecular Weight: 62.2kD. Specificity: This protein binds to Leptospira converted human serum polyclonal antibodies, as determined by ELISA and Western ELISA. Suitable for use in lateral flow human Leptospira diagnostics. Biological Activity: Not Determined. Application and Instructions for use Recommended concentrations for use are approximate values. A dose dependent response assay should be performed to determine the optimal concentration for use in specific applications. ELISA and Western ELISA require 10-100ng protein depending on the nature and affinity of the detection reagent. Leptospira converted human serum polyclonal antibodies yield titers of 1:1000 or greater at 100ng of immobilized protein under standard ELISA conditions.