Gastrointestinal tumor antigen is a large glycoprotein defined by a carbohydrate epitope, CA 19-9, located on a protein core mucin. It is referred to in the literature as sialylated Lewis A (Lea). It is over expressed by epithelial tumors of the gastro intestine including the stomach, small and large intestine, colon, pancreas and cervix. These mucins are largely carbohydrate, 80-90%.
Source:CA 19-9, from human ascites fluid.
Activity:~20,000-120,000 U/ml (Roche EIA)
Applications:Suitable for use for making standards, calibrators, and single analyte controls. Other applications not tested.
Recommended Dilution:Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 6 months after receipt at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
仕様
Size：50KU
Source Antigen：Human ascites fluid
Grade：Standard Grade
Purity：Partially Purified
Form：Supplied as a liquid in PBS, pH 7.4, 0.09% sodium azide.
