Table 3: Differentiation Grade of the CIN Specimens and the Proportion of p16 and MIB-1 Positive Cells (Grade 4 = CIN with Beginning Invasion)

No. Grade p16-Positive Cells MIB-1-Positive Cells HPV β-Actin
1 1 66% (402/614) 3% (15/510) - +
2 1 51% (263/521) 4% (22/522) - +
3 2 57% (312/550) 13% (72/552) - +
4 2 46% (258/558) 16% (89/569) - +
5 2 41% (320/782) 10% (72/694) - +
6 3 53% (378/720) 16% (120/754) + (type 16) +
7 3 41% (251/615) 8% (70/831) - +
8 3 84% (536/639) 18% (118/649) + (type 16) +
9 3 59% (395/669) 30% (183/613) - +
10 3 83% (598/725) 12% (60/502) - +
11 4 27% (149/547) 3% (15/539) - n.a.
12 4 37% (247/664) 8% (42/546) - +
Mean ± SD 53.6 ± 17.3 12% ± 8%