Figure 2

The mean expression rate of Cyclin D1 in the papillomas and the papillary carcinomas. The expression rate of Cyclin D1 is 27.54% ± 15.43% in papillary carcinomas and 8.81% ± 8.41% in papillomas (p < 0.01). The values are expressed as $\overline{X}$±SD. *P < 0.01 (Mann–Whitney U test). The difference exhibited clear statistical significance.