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Figure 2 Coronary angiograms from patients in the non-NTG group (panel A) and NTG group (panel B). The angiograms were obtained at the time of the morning control solution of D5W (Control AM), during 104 mol/liter of ACh in the morning (ACh4 AM), during the afternoon control solution of D5W (Control PM) and during 104 mol/liter of ACh in the afternoon (ACh4 PM). The white arrow identifies the LAD.
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