This monoclonal antibody reacts with a wide variety of simple epithelia. It does not react with stratified squamous epithelia. It reacts with epithelial tumors of the gastrointestinal tract, lung, breast, pancreas, ovary, and thyroid. Cytokeratin 18, which belongs to the type A (acidic) subfamily of low molecular weight keratins, exists in combination with cytokeratin 8. It was reported that tissues from gastrointestinal tract are positive for both cytokeratin 8 and 18 but do not contain cytokeratin 14. Tissues from gastrointestinal tract, respiratory tract and urogenital tract, as well as endocrine and exocrine tissues and mesothelial cells are positive for cytokeratin 18.
Applications
Suitable for use in ELISA, Immunofluorescence, Flow Cytometry, Western Blot, Immunoprecipitation and Immunohistochemistry. Other applications not tested.
Recommended Dilution
Western Blot: 0.5-1ug/ml Flow Cytometry: 0.5-1ug/10e6 cells Immunofluorescence: 1-2ug/ml Immunoprecipitation: 1-2ug/500ug protein lysate Immunohistochemistry (Frozen & Formalin fixed paraffin embedded): 0.5-1ug/ml/30min @ RT Optimal dilutions to be determined by the researcher.
Positive Control
MCF-7, HeLa cells, Breast Cancer
Storage and Stability
May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Immunogen
Human breast cancer PMC 42 cells
Form
Supplied as a liquid in PBS, 0.05% BSA, 0.05% sodium azide. Also available without BSA and azide, see 138558-AF.
Purity
Purified by Protein G affinity chromatography.
Specificity
Recognizes human keratin 18. Does not react with mouse, rat, hamster, bovine, canine, porcine and sheep.