The IL-4 protein actively participates in the B cell activation process, acting as a costimulator for DNA synthesis. It induces the expression of class II MHC molecules on resting B cells, enhances IgE and IgG1 secretion and cell surface expression, and modulates CD23 expression on lymphocytes and monocytes. IL-4 Protein, Canine is the recombinant canine-derived IL-4 protein, expressed by E. coli , with no tag.
