Supports IL-2 independent and IL-4 independent growth of helper T-cells. Biological Activity: Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine TS1 cells is less than 0.02ng/ml, corresponding to a specific activity of > 5.0x10e7 IU/mg. Sequence: QRCSTTWGIR DTNYLIENLK DDPPSKCSCS GNVTSCLCLS VPTDDCTTPC YREGLLQLTN ATQKSRLLPV FHRVKRIVEV LKNITCPSFS CEKPCNQTMA GNTLSFLKSL LGTFQKTEMQ RQKSRP Molecular Weight: 14.2kD PubMed ID: 2521242, 1971295, 2528451, 3137580 Gene Name: Il9 Swiss Prot: P15247 Storage and Stability: Lyophilized and reconstituted products are stable for 6 months after receipt at -20C. Reconstitute with sterile PBS. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
