Anti-CD137L (human), clone ANC5D6, R-PE conjugated

Human CD137 ligand is a type II transmembrane protein constitutively expressed by monocytes, B cells neuroblastoma cells, and some activated T cells. The interaction of CD137 (4-1BB) and CD137L can supply a costimulatory signal to T cells through CD137. The interaction can also effect a reverse signal, inducing monocyte activation, or T cell inactivation and programmed death through CD137L.