CD40LG and autoimmune vasculitis: To extend the knowledge of humans innate-like B-cells, as well as their role in autoimmune disease, we investigated the production of various antibody subclasses (IgM, IgG, and IgA) and cytokines (TNF and IL-10) by MZ-like B-cells in healthy controls (HC) and in in patients with autoimmune vasculitis.