Clone T6D11 recognizes the human CD45RA antigen which is expressed on naive CD4+
T cells as well as on CD8+
effector T cells. CD45RA is also present on subsets of B and NK cells as well as on plasmacytoid dendritic cells. The CD45RA antibody recognizes the 220 kDa isoform of the leukocyte common antigen (LCA), a transmembrane tyrosine phosphatase.