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Figure 4 Myocardial content of prostaglandin (PG)E2 and 6-keto-PGF1-alpha after morphine (M) pretreatment. Data are mean ± SEM. IN = indomethacin; NS = NS-398; SC = SC-560. *p < 0.05 vs. control;
p < 0.05 vs. M 48 h;
p < 0.05 vs. M 24 h.