Figure 3: Absence of E4 staining in benign cervical samples.

(a) E4 staining in a case of CIN 1 served as a positive control. (b) A representative example of an E4 negative cervical sample (BC 85) which was positive for HPV using ISH and Q-PCR.

(a) E4 staining in a case of CIN 1 served as a positive control. (b) A representative example of an E4 negative cervical sample (BC 85) which was positive for HPV using ISH and Q-PCR.