The Rat IL-2 yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Rat IL-2 applications are for cell culture, ELISA Standard, ELISpot Control, and Western Blot Control. Rat IL-2 Specifications: (Molecular Weight:15.5 kDa) (Amino Acid Sequence:APTSSPAKET QQHLEQLLLD LQVLLRGIDN YKNLKLPMML TFKFYLPKQA TELKHLQCLE NELGALQRVL DLTQSKSFHL EDAGNFISNI RVTVVKLKGS ENKFECQFDD EPATVVEFLR RWIAICQSII STMTQ). For research use only. Made in the USA.