4-1BB/TNFRSF9/CD137: Luminex Assays

4-1BB, also known as CD137 and TNFRSF9, is a transmembrane TNF receptor superfamily member that is expressed as on various populations of activated T cell including CD4+, CD8+, memory CD8+, NKT, and regulatory T cells as well as on myeloid and mast cell progenitors, dendritic cells, mast cells, and bacterially infected osteoblasts. 4-1BB binding by 4-1BB Ligand costimulates T cell proliferation, activation, and/or survival and can enhance the activation-induced cell death of repetitively ...