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Expression of E2F-responsive genes. A, cervical sections were stained for cyclin E. Brown, positive staining; blue, hematoxylin counterstain. Dashed line, location of the basement membrane. B, cervical cross sections of the indicated genotypes were stained for Mcm7. K14E7RbWT/WT cervix was identical to K14E7Rbflox/flox, so is not shown.
