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We succeeded in establishing a human gastric carcinoma cell line (KE-97) from oncocytes obtained from the mesentery disseminated metastatic focus of a 52-year-old male stomach cancer patient. From a histopathological point of view the gastric carcinoma was clearly a mucin-producing mucinous carcinoma, portion of which were mixed with poorly differentiated adenocarcinoma and signet-ring cell carcinoma. The oncocytes were fused into a mass and exhibited a suspended proliferating system, with a doubling time of about 28.8 hours. Transplantation of the cancer cells into skid mice resulted in a tumor system in all cases, and histologically, mucinous vacuoles were found in the cell membranes. With immunological staining they were found to be positive for anti-CEA antibodies, anti-CA19-9 antibodies and anti-ICAM-1 antibodies. Autopsy found extensive hematogenous metastasis (lung, liver) and cancerous peritonitis. KE-97 is mucinous carcinoma, and it was reported with the belief that it is a useful cell line upon the investigation of its cancer metastasis mechanism and cytological characteristics.
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