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  • Title: A comparison of six monoclonal antibodies for detection of cytokeratins in normal and neoplastic canine tissues.
    Author: Cardona A, Madewell BR, Naydan DK, Lund JK.
    Journal: J Vet Diagn Invest; 1989 Oct; 1(4):316-23. PubMed ID: 2484942.
    Abstract:
    Twenty normal canine tissue specimens, both fetal and adult; 19 epithelial neoplasms; and 18 nonepithelial neoplasms were examined using 6 commercially available monoclonal antibodies differing in their recognition of various molecular weight cytokeratins in human tissues. Fresh tissue samples were fixed in 100% ethanol and paraffin embedded prior to sectioning. The intermediate filament proteins were identified by an avidin-biotin-immunoperoxidase method. Primary antisera used included AE1/AE3, CAM-5.2, 35BH11, 34BE12, PKK1, MAK-6 cytokeratins, and vimentin. Monoclonal antibodies detected cytokeratins in a wide variety of canine epithelial tissues and neoplasms. Normal mesenchymal tissues and neoplasms, and stromal elements of epithelial tissues, showed no reactivity with anti-cytokeratins, but reacted positively with vimentin. Although PKK1, CAM-5.2, and MAK-6 were the most consistently reactive anti-cytokeratins, the full panel of monoclonals was required to detect cytokeratins in all of the epithelia evaluated.
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