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29:用~(60)Coγ线照射引起正常人二倍体细胞系(Wi-38)肿瘤性变形。作者近些年来用化学致癌物诱发体外正常人的二倍体细胞肿瘤性变形,发现硝基喹啉氧化物(4-nitroguinoline 1-Oxide,4NQO)是个很强的致癌物。作者推测4NQO引起人二倍体细胞肿瘤
29: Irradiation with a ~(60)Co γ line causes normal human diploid cell line (Wi-38) to undergo neoplastic deformation. In recent years, the authors used chemical carcinogens to induce normal human diploid cell neoplastic transformation. It was found that 4-nitroguinoline 1-Oxide (4NQO) is a strong carcinogen. The authors speculate that 4NQO causes human diploid cell tumors