Figure 5.
Properties of IL-21 and the IL-21 receptor. IL-21 plays a role in B-cell differentiation and T cell-B cell interactions, and is elevated in individuals with systemic lupus erythematosus.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.