The Zebrafish PDGF-BB yeast-derived recombinant protein is not tagged and is naturally endotoxin-free. The purity is greater than 98% as visualized by SDS-PAGE analysis. Zebrafish PDGF-BB applications are for cell culture, ELISA standard, and Western Blot Control. Zebrafish PDGF-BB Specifications: (Molecular Weight:11.7 kDa) (Amino Acid Sequence:SLLDAQPAQQ AICKVRTEVI EVTRSMLDRS NADFLLWPPC VEVQRCSGCC NTKTLQCVPV LTHTRYLQVM KIQYVKKRPL YDKAVVPVLD HVECRCQPAP RPA). For research use only. Made in the USA