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Figure 1 Urinary thromboxane B₂ (UTxB₂) levels (ng/g UCr/24 h) during the two treatments: placebo (open bars) and active treatment (hatched bars). *p < 0.01 vs. day 6 of placebo; °p < 0.01 vs. day 8 of placebo; p < 0.01 vs. baseline.