Anti-CST2 Antibody

The Antibodies.com Anti-CST2 Antibody is a rabbit polyclonal reagent that targets Cystatin SA (CST2), a secreted cysteine protease inhibitor belonging to the type 2 cystatin family. Raised in rabbit and supplied as an unconjugated IgG polyclonal, this primary antibody is validated for Western blot (WB) and immunofluorescence (IF) workflows and recognizes CST2 in samples of human and mouse origin. CST2 is best known for its abundant expression in saliva and other exocrine secretions, where it regulates cysteine cathepsin activity, and it has been investigated in studies of oral biology, tumor microenvironment biology, and protease-antiprotease balance in epithelial tissues. Each vial contains 50 µL of liquid antibody, a single-use format that supports multiple blot membranes or dozens of immunofluorescence slides when diluted to working concentration. For handling, aliquot upon first thaw to limit freeze-thaw cycles and store frozen at -20°C in working aliquots, with short-term storage at 4°C acceptable for active use; protect from light to preserve reagent integrity. Researchers probing cystatin biology, salivary proteome composition, or epithelial protease regulation will find this reagent a focused, species-relevant tool for both protein detection and subcellular localization studies.