InVitria’s ITSE Animal-Free® (Insulin-Transferrin-Selenium-Ethanolamine) is a recombinant, blood-free cell culture media supplement used to reduce serum and serum-derived components from cell culture media while optimizing cell growth. InVitria offers a family of defined supplements that supply the optimal amounts of the essential protein components in defined, recombinant form: ITS, ITSE, ITSE+A Animal Free®. Our recombinant insulin-transferrin supplements are recommended for use with most cultured cell types, including: Hybridoma, CHO, VERO, HEK293, stem cells, fibroblasts, primary cell isolation and passage, and immortalized cell lines. Made in the USA.