| Antigen | Human CA153 (mol wt 400 kda) was purified from human fluids (>98%) using biochemical and immunoaffinity techniques. Purity is tested by RID, SDS-PAGE, and IEP. All human source materials have tested negative for HIV 1, HIV 2, HIV Ag, HBsAg and HCV. No test guarantees a product to be non-infectious. Therefore, all material derived from human fluids or tissues should be considered as potentially infectious |