Anti-TNFSF9 Antibody

This unconjugated polyclonal reagent from Antibodies.com is raised in rabbit against human TNFSF9, the type II transmembrane cytokine also known as 4-1BB ligand (4-1BBL/CD137L) that is expressed on activated antigen-presenting cells and engages the 4-1BB (CD137) costimulatory receptor on T lymphocytes. Supplied as 100 µl of antibody, it supports Western blot and immunofluorescence workflows in human research samples, making it useful for studies of T-cell costimulation, immune checkpoint signaling, and tumor immunology. The polyclonal format provides multi-epitope recognition of the target, while the unconjugated format leaves the choice of detection label and fluorophore open to the end user, accommodating standard WB membrane probing and IF imaging on fixed cells.