The Swine IL-4 yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Swine IL-4 applications are for cell culture, ELISA standard, and Western Blot Control. The Swine IL-4 yeast-derived recombinant protein can be purchased in multiple sizes. Swine IL-4 Specifications: (Molecular Weight: 12.5 kDa) (Amino Acid Sequence: HKCDITLQEI IKTLNILTAR KNSCMELPVT DVFAAPENTT EKETFCRAST VLRHIYRHHT CMKSLLSGLD RNLSSMANMT CSVHEAKKST LKDFLERLKT IMKEKYSKC (109)) (Gene ID: 397225). For research use only. Made in the USA