IL-6 is a multifunctional cytokine that binds to IL6R and forms a complex with IL6ST/gp130 to initiate intracellular signaling. It induces "classical signaling" and "trans signaling" by interacting with membrane-bound IL6R or soluble IL6R. IL-6 Protein, Canine is the recombinant canine-derived IL-6 protein, expressed by E. coli , with tag free.