CD155(PVR, Necl-5) tumor expression is unregulated by Nitric Oxide. This has implications for NK cell biology.By room34 / April 3, 2015 “Nitric Ooxide Donors Iincrease PVR/CD155 DNAM-1 Ligand Expression in Multiple Myeloma Cell: Role of DNA Damage Response Activation” Cinzia Fionda, Marco Cippitelli, et al. (2015) BMC Cancer 15(1): 17 PMID: 25609078 Ancell human CD155 recombinant protein and monoclonal antibody products available soon!