Basophils, Human, mAb 2D7
The monoclonal antibody 2D7- is a specific marker for basophils detecting- a basophil-specific protein of 7.2-7.5 kDa localized in secretory granules. Activated basophils- have been shown to have a reduced staining with the 2D7 antibody consistent with localization of the antigen- to secretory granules.
Basophils are multifunctional haematopoietic cells that- secrete a wide variety of proinflammatory- agents upon activation such as histamine and cytokines. Moreover, basophils can induce IgE production by B cells. Under normal conditions basophils are primarily produced in the bone marrow, whereas mature basophils reside in the circulation and can enter tissues at sites of inflammation. Both basophils and mast cells have been implicated in the pathogenesis of allergic inflammation due to the abundant expression of high affinity receptors for IgE. The 2D7 antibody can be used- as a sensitive and precise marker for human basophils- and does not react with lymphocytes, monocytes, eosinophils, neutrophils- or mast cells in immunohistochemistry. Moreover, the antibody is suitable for western blot analysis of the 2D7 antigen.
FC: Antibody 2D7 stains the extracellular domain of basophils. As negative control CD203c negative cells (basophil depleted cell fractions) (Ref.3)
W: A reduced sample treatment and SDS-Page was used. The band sizes are 72 en 76 kDa (Ref.1).
IHC-P: Fresh surgical tissues were fixed in Carnoy's fluid for 24 h and transferred to absolute ethanol. Tissues were embedded in paraffin, and 4- µm sections were prepared. Tissue sections were dewaxed in xylene and rehydrated in graded ethanol solutions. Endogenous peroxidase was inhibited. (Ref.1)
IHC-F: Sections were fixed in either 10% NBF or Carnoy's fluid for 15 minutes at RT. NBF-fixed tissue sections were digested with 0.1% protease in TTBS for 20 min at RT. Endogenous peroxidase activity was inhibited by methanol with 0.6% H2O2 for 30 min at RT. Blocked by incubation in horse serum at 1:20 dilution in TTBS for 1 hr at RT. 2D7 at a 1:300 dilution in TTBS overnight at 4 ° C or with a murine mAb of undetermined specificity (MOPC31-C) as a negative control. (Ref.2)
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