CD81 (clone 5A6) is a mouse monoclonal antibody that recognizes the human tetraspanin protein CD81. All antibody conjugates have been validated in flow cytometry. Each is supplied at 5 uL/test, with sufficient antibody for either 25 or 100 tests. The antibody belongs to the Biotium Choice list of select antibodies that have been validated and optimized in-house for optimal performance.