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BH4 level (A), BH2 level (B), BH4 percentage of total biopterin (C), and BH4-to-BH2 ratio (D) in small mesenteric arteries (n = 10) from NORM, ANG, ANG + TT, and ANG + BH4. *Significant difference vs. NORM (P ≤ 0.05). †Significant difference vs. ANG (P ≤ 0.05). #Significant difference vs. ANG + TT (P ≤ 0.05).
