IL-21, Rat (sf9, His)

IL-21 protein is an immunomodulatory cytokine that plays a key role in the transition from innate immunity to adaptive immunity. It induces IgG (1) and IgG (3) in B cells, which are critical for T follicular helper (Tfh) cell development, germinal center formation, and robust antibody responses, especially in acute viral infections. IL-21 Protein, Rat (sf9, His) is the recombinant rat-derived IL-21 protein, expressed by Sf9 insect cells , with C-His labeled tag.