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Relative expressions (mean ± SEM) of COX-1, COX-2, mPGES-1, EP1 and EP2. Tissue contents in malignant tumours (adenocarcinomas) related to stage. Stage I (n = 7), stage II (n = 6) and stage III (n = 14).(a) P < 0.05 vs stage I, (b) P < 0.05 vs stage II.
