Anti-Cytokeratin 19 Antibody

Antibodies.com offers a rabbit polyclonal antibody raised against Cytokeratin 19, a type I intermediate filament protein of the keratin family expressed in simple and stratified epithelia. The unconjugated reagent is supplied as 100 µl and has been validated for western blot, immunohistochemistry, immunofluorescence, and ELISA workflows on human, mouse, and rat samples.

Cytokeratin 19 serves as a reliable epithelial lineage marker in cancer research, supporting identification of carcinoma cells in mixed tumor populations and detection of circulating tumor cells in peripheral blood. The antibody is used to characterize epithelial-mesenchymal transition in cell line models and to visualize ductal and glandular structures in tissue sections from breast, lung, colorectal, and hepatocellular carcinoma studies.

As an unconjugated polyclonal reagent, this antibody is compatible with both chromogenic and fluorescent secondary detection systems, allowing flexibility in standard immunoblotting, IHC, and immunofluorescence panels. Aliquoting upon receipt helps preserve polyclonal antibody pools across freeze-thaw cycles for longer research campaigns.