Abstract
Cyclooxygenase(COX)-2 expression was evaluated in 24 paraffin-embedded canine nasal carcinoma tissue samples by immunohistochemistry. Several different tumor types were represented, including carcinomas, adenocarcinomas and squamous cell carcinomas. COX-2 expression was identified in 17/24 cases (71%). The proportion of positive cells expressing COX-2 ranged from 10 to 95% and COX-2 expression was predominantly localized in the cytoplasm. Treatment with a COX-2 inhibitor should be investigated, along with the utilization of COX-2 expression as a prognostic marker.
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