Human ULBP-4/RAET1E PharmaGenie ELISA Kit (SBRS1216)

The ULBP-4 protein, also known as RAET1E, is a stress-induced ligand for the activating NKG2D receptor found on natural killer cells and CD8+ T lymphocytes, making quantitative detection valuable in tumor immunology, viral pathogenesis, and transplant rejection studies. This Assay Genie kit uses a pre-coated microplate in a capture-and-detection antibody configuration with a human-specific capture antibody that shows no significant cross-reactivity with rodent orthologues. The assay accommodates cell culture supernatants, plasma, and serum samples, with each well receiving a 100 µL aliquot of prediluted specimen. Reconstituted standards should be stored frozen at -20°C in single-use aliquots to preserve activity through repeated freeze-thaw cycles. Researchers investigating NKG2D ligand shedding in hepatocellular carcinoma, cytomegalovirus infection, or allograft tolerance contexts will find this format useful for measuring soluble ULBP-4 concentrations in research samples.