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Catalog # HM2279

Basophils, Human, mAb 2D7

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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.

Application
Flow cytometry, Frozen sections, Immuno fluorescence, Paraffin sections, Western blot

Application Notes
IF: Cytospin preparations were fixed in methanol for 15 min, incubated in methanol containing 0.6% H2O2, for 30 min to block endogenous peroxidase, washed in dH2O, incubated with goat serum (1/500 dilution) for 2 h to block nonspecific staining. Blocked slides were washed with TTBS, pH7.4. (Ref.1)
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)

Use
For immunohistochemistry, flow cytometry and Western blotting, dilutions to be used depend on detection system applied. It is recommended that users test the reagent and determine their own optimal dilutions. The typical starting working dilution is 1:50. For functional studies, in vitro dilutions have to be optimized in user’s experimental setting.

Positive Control
Chronic myeloid leukaemia (basophilia)

Product type
Monoclonal antibodies
Amount
100 µg, 20 µg
Formulation
0.2 ml (100 µg/ml) 0.2 µm filtered antibody solution in PBS, containing 0.1% bovine serum albumin and 0.02% sodium azide.
Immunogen
Lysate of purified basophils
Isotype
Mouse IgG1
Species
Human
Storage and stability
Product should be stored at 4 °C. Under recommended storage conditions, product is stable for at least one year. The exact expiry date is indicated on the label
Precautions
For research use only. Not for use in or on humans or animals or for diagnostics. It is the responsibility of the user to comply with all local/state and federal rules in the use of this product. Hycult Biotech is not responsible for any patent infringements that might result from the use or derivation of this product.
Disease
Infectious diseases
Protocol
Protocol Western Blot
59 kb
Protocol SDS Page
57 kb
Protocol Immuno Fluorescence
39 kb
Protocol IHC-P
43 kb
Protocol Flow Cytometry
58 kb
Protocol IHC-F
36 kb
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Safety Data Sheet
SDS - HM2279-100UG
52 kb
SDS - HM2279-20UG
52 kb

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