Water Carcinogenicity and Prevalence of HPV Infection in Esophageal Cancer Patients in Huaihe River Basin, China

Figure 2

The clonal foci formed by normal Balb/c 3T3 cells (a, b) and transformed foci after malignant transformation (c, d) (Giemsa staining).

(a)

(b)

(c)

(d)