Figure 1.

In ovarian cancer, particularly mucinous adenocarcinoma, expression of CDX2 and MDR1 correlated with the degree of cell differentiation. Immunohistochemistry was performed on formalin‐fixed, paraffin‐embedded tissues with hematoxylin and eosin (A and B, upper), with an anti‐CDX2 monoclonal antibody (A and B, middle), and with an anti‐MDR1 monoclonal antibody, C494 (A and B, lower) in (A) ovarian mucinous adenocarcinoma, (B) ovarian serous adenocarcinoma, endometrioid adenocarcinoma, and clear cell carcinoma tissue.