Anti-CST4 Antibody

This rabbit polyclonal antibody targets CST4 (cystatin S), a secreted cysteine protease inhibitor expressed in salivary glands and saliva. Raised in rabbit, the unconjugated IgG reagent is supplied by Antibodies.com as a 200 µl vial suitable for western blot and immunohistochemistry workflows. Validated reactivity spans human, mouse, and rat samples, supporting cross-species studies of oral biology, saliva proteomics, and investigations of cysteine cathepsin regulation. The polyclonal format provides epitope diversity for detection of endogenous CST4 in tissue sections and immunoblots, and the unconjugated presentation allows flexible pairing with secondary antibodies of the researcher's choice. Storage at 4°C is recommended for short-term use; aliquot upon arrival to minimize freeze-thaw cycles and preserve antibody activity across multiple experiments.