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Figure 4 Myocardial blood flow and coronary flow reserve one and 12 weeks after CS or sham surgery (n = 7 each one week after surgery, and n = 10 to 14 at 12 weeks after surgery; for statistical analysis at 12 weeks, n = 10 each for Bonferroni’s post-hoc comparisons). *p < 0.01 CS vs. corresponding sham; 
p < 0.01, 
p < 0.05 HCD vs. corresponding NCD; 
p < 0.01 vs. corresponding group without BH4. BH4 = tetrahydrobiopterin; other abbreviations as in Figure 1.