Used in immunological research to quantify MEC/CCL28 levels in biological samples such as serum, plasma, and cell culture supernatants. Helps investigate mucosal immunity, particularly in the context of inflammatory diseases, allergic responses, and host defense mechanisms at mucosal surfaces. Supports studies on chemokine-mediated recruitment of immune cells like IgA antibody-secreting cells and regulatory T cells to mucosal tissues. Valuable in research related to gut, lung, and oral health, as well as autoimmune and chronic inflammatory conditions.