CD22 and acute leukemia: The immunophenotyping of BMA in this laboratory was performed using a panel of acute leukemia-containing monoclonal antibodies against CD1a, CD3, CD7, CD5, CD10, CD13, CD38, CD11c, CD19, CD20, CD22, kappa and lambda light chains, CD33, CD34, CD14, CD45, CD36, CD117, HLA-DR, cytoplasmic CD79a, cytoplasmic CD3, and cytoplasmic MPO.