Rec FLA-ST Recombinant flagellin from S. typhimurium RecFLA-ST is a recombinant flagellin purified from HEK293 cells transfected with the FliC gene which encodes flagellin in Salmonella typhimurium. RecFLA-ST is endotoxin-free according to the LAL Assay. It activates TLR5 but does not activate TLR2 nor TLR4. Specificity: TLR5 agonist Working concentration: 10 - 100 ng/ml Endotoxin level: EndoFit™ (<0.001 EU/µg) Solubility: 0.01 mg/ml in water