Rabbit IL-21 is an essential innate immune modulator, belonging to the type I cytokine family, produced by activated T cells. IL-21 is involved in the modulation of T and B cell activity along with promoting proliferation of NK cells and cytotoxic T cells. Source: Recombinant protein corresponding to aa18-150 from rabbit IL-21, expressed in Pichia pastoris Molecular Weight: ~15.4kD Applications: Suitable for use in ELISA and Western Blot. Other applications not tested. Recommended Dilution: Optimal dilutions to be determined by the researcher. Storage and Stability: Lyophilized and reconstituted products are stable for 6 months after receipt at -20C. Reconstitute with sterile PBS, 0.1% carrier protein. 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.