Receptors, ligands, and immune checkpoint proteins are central mediators of cell signaling and immune regulation, making them indispensable tools in translational and basic research. TORVIGEN's curated collection spans a broad range of targets — including PD-1, PD-L1, CTLA-4, TIM-3, LAG-3, and their cognate binding partners — offered as high-purity recombinant proteins, antibodies, and ELISA kits validated for functional and binding assays.
Whether you are profiling checkpoint expression in tumor microenvironments, developing blocking assays, or characterizing receptor–ligand interactions, this collection provides the specificity and lot-to-lot consistency demanded by rigorous life science workflows. Each product is quality-controlled for activity and purity, supporting applications from flow cytometry and immunohistochemistry to SPR and cell-based functional studies.
