1975年3月21日美国国家肿瘤研究所报道三氯乙烯可能引起小鼠肝细胞癌。国家劳动保护部门正注视其对人的职业危害,以便对工业上广泛应用的三氯乙烯有一全面认识。国家肿瘤研究所,在大鼠和小鼠用三氯乙烯做灌胃试验。各种动物均给高低两种剂量,每周五次。雌雄两性大白鼠给剂量为1000毫克/公斤或500毫克/公斤。雄性小白鼠给剂量为2400毫克/公斤,或1200毫克/公斤;雌性小白鼠剂量为1800毫克/公斤,或900 March 21, 1975 the United States National Cancer Institute reports trichlorethylene may cause mouse hepatocellular carcinoma. The national labor protection department is paying attention to its occupational hazard to human beings in order to have a comprehensive understanding of trichlorethylene that is widely used in industry. National Cancer Institute, in rats and mice with trichlorethylene do gavage test. A variety of animals were given two doses, five times a week. Male and female rats give a dose of 1000 mg / kg or 500 mg / kg. Male mice are given a dose of 2400 mg / kg, or 1200 mg / kg; female mice are dosed at 1800 mg / kg, or 900