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As compared to the primary tumors, related omental metastases showed stronger expression of Ang-2 (a and b) and Tie-2 (e and f). Primary tumors are shown on the left column and related metastases on the right. The vascular endothelial expression was strong in Ang-2 (black arrow in a). Tie-1 expression did not differ significantly between the primary and the distal metastatic tumors (c and d). Tie-1 was expressed in the tumor stroma (black arrow in d).
