PLCD4 and Ewing sarcoma: We investigated the expression of PLCδ4 in eleven human sarcoma cell lines: osteosarcoma (SaOS-2, U2OS, Hos, MG63), Ewing sarcoma (A673), liposarcoma (T778 and SW872), and RMS (RD, A204, Hs729, and SJCRH30).