Anti-Claudin 19 antibodies are used for the immunodetection of the protein encoded by the CLDN19 gene. In humans, the canonical protein has a reported length of 224 amino acid residues and a mass of 23.2 kDa. Its subcellular localization is in the cell membrane. Alternative splicing is reported to yield 3 different isoforms for this protein. A member of the Claudin protein family, it is known to play an important role in tight junction-specific obliteration of the intercellular space, through calcium-independent cell-adhesion activity. The gene encoding this protein is implicated in Hypomagnesemia. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of Claudin 19 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunofluorescence are also common applications.