Tryptase is the most abundant secretory granule-derived serine proteinase contained in mast cells. Tryptase has recently been used as a marker for mast cell activation and is involved with allergic response. Tryptase may act as a mitogen for fibroblast lines. Elevated levels of serum tryptase occur in both anaphylactic and anaphylactoid reactions, but a negative test does not exclude anaphylaxis. Applications: Suitable for use in Western Blot, Immunohistochemistry. Other applications not tested. Recommended Dilution: Immunohistochemistry: For optimal results, tissues or cytospin preparations should be fixed in Carnoys Fluid (60% ethanol, 30% chloroform, 10% glacial acetic acid). Not recommended for use on formaldehyde fixed tissue. May be used on thin sections prepared for ultrastructural analysis after fixation of tissue in a modified Karnovskys reagent (Lab Invest. (1988). 58:682-691). Western Blot: detected tryptase in 10ug of human fetal skin lysate. Optimal dilutions to be determined by the researcher. Storage and Stability: Store product at 4C if to be used immediately within two weeks. For long-term storage, aliquot to avoid repeated freezing and thawing and store at -20C. Aliquots are stable at -20C for 12 months after receipt. Dilute required amount only prior to immediate use. Further dilutions can be made in assay buffer. Note: Sodium azide is a potent inhibitor of peroxidase and should not be added to HRP conjugates. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Note: Applications are based on unconjugated antibody.
