SensiStain Anti-Cytokeratin 19 Antibody is a intermediate filament protein making up the structural integrity of epithelial cells specifically found in the periderm. Cytokeratin 19 (CK19) have been used in studies for detection of tumor cells in bone marrow, lymph nodes, and even in peripheral blood. The SensiStain Anti-Cytokeratin 19 Antibody is designed for the detection of human CK19 in tissues and in cell lysates.