Figure 1

The grading of immunohistochemical staining for TFPI-2. Immunohistochemical staining of cervical tissues for TFPI-2 (A-E). The immunostaining intensity was defined as grade 0 (no detectable staining, A), grade1 (weak staining, B), grade 2(clear but not so strong staining, C), grade 3 (more strong staining, D) and grade 4 (stronggest staining, E). The nuclei were counterstained with hematoxylin blue. Image magnifications are 200×.