CEACAM5 and neoplasm: To select OECCL suitable for the production of cell lysates as the source of multiple tumor antigens, we first determined the expression levels of well-established OEC-associated antigens (CA-125, MUC1, ErbB-2, CEA, and survivin) [34, 35] in the CAOV3, SKOV-3, Hey, and A2780 cell lines by flow cytometry.