Beckman Coulter introduces the IOTest® Anti-IRp60-PE monoclonal antibody for the identification of an inhibitory protein present on NK and dendritic cells. Because it is expressed on all NK cells as well as on a certain percentage of other cell types, IRp60 may play a general role in the regulation of the immune response. This PE-conjugated antibody is the first Anti-IRp60 reagent on the market and is the newest addition to Beckman Coulter’s universal cytometry reagent line, which works on all instrument platforms, including the company’s Cell Lab Quanta™ and FC 500 MPL flow cytometers.