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Catalog # HM1086

Fibroblasts, Mouse, mAb ER-TR7


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Monoclonal antibody ER-TR7 recognizes with an intracellular component of mouse fibroblasts. Fibroblasts are the least specialized cells in the connective-tissue family. They are dispersed in connective tissue throughout the body, where they secrete a nonrigid extracellular matrix (ECM) that is rich in type I and/or type III collagen. Conective tissue consists of glycosaminoglycans, proteoglycans and glycoproteins through which various fibres run. These fibres can be collagenous, elastic or reticular. Reticular fibres are composed from the family of collagen proteins and give tensile strength. These fibres are made by reticular fibroblasts. The activation of fibroblasts by inflammatory stimuli results in their migration, proliferation and deposition of extracellular matrix components, important features involved in both wound healing and fibrosis.
The ER-TR7 antigen is a ubiquitous component of stromal (interstitial) matrix cartilage and of at least some basement membrane zones. The antigen detected is not a basement membrane component, nor any major collagen type or fibronectin. The antigen detected has a wider tissue distribution than reticulin. ER-TR7 detects an intracellular component of fibroblasts. Since ER-TR7 does not react with purified laminin, collagen types I-V, fibronectin, heparin sulfate proteoglycan, entactin or nidogen, it detects a hitherto uncharacterized antigen.
The monoclonal antibody ER-TR7 can be used to study the micro-anatomy of various organs. ER-TR7 outlines the various compartments of peripheral lymphoid organs by characteristic labeling patterns (no such compartments are found in central lymphoid organs). Furthermore ER-TR7 delineates various types of connective tissue compartments in nonlymphoid organs.
The antibody ER-TR7 detects reticular fibroblasts, which constitute the cellular framework of lymphoid and nonlymphoid organs and their products. ER-TR7 is useful to clearly delineated the follicles, periarteriolar lymphoid sheath and marginal zone; the major white pulp compartments. Furthermore in lymph nodes, the capsule, sinuses, follicles, paracortex and medullary cords are clearly delineated.

Flow cytometry, Frozen sections, Immuno fluorescence, Paraffin sections

Application Notes
F: Sections were stained using an indirect immunoperoxidase method (Ref.1).
FC: Splenocytes were incubated with ER-TR7 for 30'(Ref.4).
IF: Acetone or PFA fixed cells were quenched with 50mM NH4Cl for 30', blocked and permeabilized with 1.5% goat serum/0.1% saponin in PBS for 45' at RT. Incubation of ER-TR-7 in block and perm solution for 45' at RT. Specific staining was detected with a fluorescent conjugated oat anti-rat IgG (Ref.5).
P: Formalin fixed paraffin sections were deparafined, hydrated in ethanol and stained with ER-TR7 for 3';at RT (Ref.3).

For immunohistology and flow cytometry 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 1:20.

Positive Control

Product type
Monoclonal antibodies
20 µg, 100 µg
1 ml (100 µg/ml) 0.2 µm filtered antibody solution in PBS, containing 0.1% bovine serum albumin and 0.02% sodium azide.
Mouse thymic stromal cells
Rat IgG2a
Storage and stability
Product should be stored at 4 °C. Under recommended storage conditions, product is stable for one year.
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 with the use of or derivation of this product.
Tumor immunology

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