Catalogue

Background
Cytokeratins are a subfamily of intermediate filament proteins and are characterized by a remarkable biochemical diversity, represented in Human epithelial tissues by at least 20 different polypeptides. They range in molecular weight between 40 kDa and 68 kDa and isoelectric pH between 4.9 – 7.8. The individual Human Cytokeratins are numbered 1 to 20. The various epithelia in the Human body usually express Cytokeratins which are not only characteristic of the type of epithelium, but also related to the degree of matuRation or differentiation within an epithelium. Cytokeratin subtype expression patterns are used to distinguish between different types of epithelial malignancies. The Cytokeratin antibodies are not only of assistance in the differential diagnosis of tumors using immunohistochemistry on tissue sections, but are also a useful tool in cytopathology and flow cytometric assays.

Source
35ßH11 is a mouse monoclonal IgM antibody derived by fusion of NS-1 mouse myeloma cells with spleen cells from a Balb/c mouse immunized with a cytoskeletal preparation of the human hepotocellular carcinoma cell line Hep3B.

Product
Each vial contains 100 ul 1 mg/ml purified monoclonal antibody in PBS containing 0.09% sodium azide.

Formulation: Each vial contains 100 ul 1 mg/ml purified monoclonal antibody in PBS containing 0.09% sodium azide.

Specificity
35ßH11 reacts exclusively with Cytokeratin 8 which is present in glandular-type epithelia and most carcinomas derived thereof. It is in general not reactive in non-epithelial tissues and cells.

Applications
35ßH11 is reactive on frozen tissue sections after fixation in methanol. It is particularly effective on paraffin-embedded tissues after microwave pretreatment of the slides. In addition, 35ßH11 is suitable for immunocytochemistry, immunoblotting and flow cytometry. Optimal antibody dilution should be determined by titration; recommended range is 1:100 – 1:500 for immunohistochemistry with avidin-biotinylated Horseradish peroxidase complex (ABC) as detection reagent, and 1:100 – 1:1000 for immunoblotting applications.

Storage
The antibody is shipped at ambient temperature and may be stored at +4°C. For prolonged storage prepare appropriate aliquots and store at or below -20°C. Prior to use, an aliquot is thawed slowly in the dark at ambient temperature, spun down again and used to prepare working dilutions by adding sterile phosphate buffered saline (PBS, pH 7.2). Repeated thawing and freezing should be avoided. Working dilutions should be stored at +4°C, not refrozen, and preferably used the same day. If a slight precipitation occurs upon storage, this should be removed by centrifugation. It will not affect the performance or the concentration of the product.

Shipping Conditions: Ship at ambient temperature

Caution
This product is intended FOR RESEARCH USE ONLY, and FOR TESTS IN VITRO, not for use in diagnostic or therapeutic procedures involving humans or animals. It may contain hazardous ingredients. Please refer to the Safety Data Sheets (SDS) for additional information and proper handling procedures. Dispose product remainders according to local regulations.This datasheet is as accurate as reasonably achievable, but our company accepts no liability for any inaccuracies or omissions in this information.

References
1. Gown, A.M., and Vogel, A.M. (1982). Monoclonal antibodies to intermediate filament proteins of human cells: unique and cross-reacting antibodies. Journal of Cell Biology 95, 414-24.

Protein Reference(s)

Database Name: UniProt

Accession Number: P05787

Safety Datasheet(s) for this product: