Expression of CD99L2 on leukocytes and comparison with CD99. Detection of CD99L2 (left panels) and CD99 (right panels) primary T cells, B cells, and neutrophils isolated from blood and on neutrophils derived from bone marrow and on the T cell line SJL.PLP7 was analyzed by flow cytometry. Binding of affinity purified anti-CD99L2 or anti-CD99 antibodies (black lines) and control IgG (gray lines).