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Figure 5 Macroscopy c-AMP–treated arteries. Macroscopy of the coronary arteries at 2 weeks after implantation of a Wiktor stent. While a "control" artery (A) was not exposed to db-c-AMP, but only to EB, the c-AMP-treated artery was first exposed to 1 mM db-c-AMP and then to EB with a molecular weight of 1 kD (B), showing an improvement especially in the areas between the stent struts.