Research Article
Water Carcinogenicity and Prevalence of HPV Infection in Esophageal Cancer Patients in Huaihe River Basin, China
Figure 1
Cell transformation frequency of Balb/c 3T3 cells with different concentration multiples of different water samples. (a) River water sample; (b) well water sample from 10-meter depth; (c) well water sample from 40-meter depth. .
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