Figure 1.

Immunohistochemical analysis of B7-H4 in cervical cancer. (A and B) Representative results of negative control expression in squamous cell carcinoma and vascular spaces; (C and D) the cancer cells involving vascular spaces were strongly stained in certain cases. Positive B7-H4 expression in (E) squamous cell carcinoma and (F) adenocarcinoma. Arrows, B7-H4 positivity expressed in the cytoplasm and on the membrane of cervical cancer cells; boxes, magnification of the respective areas indicated by the arrows.