The use of endoluminal metallic stents in percutaneous transluminal coronary angioplasty has become common in the treatment of arterial stenosis.Drug-eluting stents (DES) reduce stent restenosis by delivering drugs directly to the site of the vessel injury.However,the implantation of DES increases the incidence of late stent thrombosis caused by hypersensitivity to drug loading and by incomplete re-endothelialization resulting from the anti-proliferative coating oftbe stent struts [1].