Immunohistochemical analysis of paraffin-embedded Raw 264.7 cell pellet (left, negative) or mouse bone marrow-derived macrophages cell pellet (right, positive) using PD-L1 (D5V3B) (Mouse specific; IHC specific) Rabbit mAb #64988.
|41965S||1 Pack (5 slides)||$ 148|
Each control slide contains formalin fixed, paraffin-embedded cell pellets: Raw 264.7 (mPD-L1 negative) and mouse bone marrow-derived macrophages (mPD-L1 positive), which serve as controls for mPD-L1 immunostaining.
Programmed cell death 1 ligand 1 (PD-L1, B7-H1, CD274) is a member of the B7 family of cell surface ligands that regulate T cell activation and immune responses. The PD-L1 ligand binds the PD-1 transmembrane receptor and inhibits T cell activation. PD-L1 was discovered following a search for novel B7 protein homologs and was later shown to be expressed by antigen presenting cells, activated T cells, and tissues including placenta, heart, and lung (1-3). Similar in structure to related B7 family members, PD-L1 protein contains extracellular IgV and IgC domains and a short, cytoplasmic region. Research studies demonstrate that PD-L1 is expressed in several tumor types, including melanoma, ovary, colon, lung, breast, and renal cell carcinomas (4-6). Expression of PD-L1 in cancer is associated with tumor-infiltrating lymphocytes, which mediate PD-L1 expression through the release of interferon gamma (7). Additional research links PD-L1 expression to cancers associated with viral infections (8,9).
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