abstract |
A preparation of an isolated immunoreactive CA 125 Antigen, and a method of isolating it is disclosed. CA 125 Antigen is a glycoprotein having a molecular weight of about 200kD, and a carbohydrate-content of about 24%. The CA 125 Antigen is isolated from a cell culture medium by acid precipitation, and is subsequently purified by size exclusion chromatography and immunoaffinity chromatography. |