anti-Blood Group A (CD173) mouse monoclonal, 3-3A, purified

3-3A reacts with determinants of chain A type 3 and 4 and chain H type 3 and 4, but not with type 1 and 2 chain structures. It is not reactive with immunodominant A trisaccharide. Increased expression of this antigen has been observed on some tumor tissue 3-3A reacts with determinants of chain A type 3 and 4 and chain H type 3 and 4, but not with type 1 and 2 chain structures. It is not reactive with immunodominant A trisaccharide. Increased expression of this antigen has been observed on some tumor tissues such as gastric carcinomas, urothelial carcinomas, and colon carcinomas. 3-3A does not react with normal tissue sections of donors with blood group B and 0 but it reacts specifically with malignant tissues in these individuals. Positive control: KG1 cells or human colorectal carcinoma.