Ascites cells with tumor-related markers (WT1, HER2 or Pax8) and macrophage markers (CD68 or CD11b) were also observed in confocal images from these patients (Fig. 6), suggesting that the phagocytic/fusion cells with epithelial and macrophage characteristics were also present in the ascites of patients with ovarian cancer. The gene discussed is ERBB2; the disease is ovarian cancer.