This trial aims to investigate the use of donated mesenchymal stem cells injected into the heart at the time of bypass surgery in patients with coronary artery disease and ischaemic cardiomyopathy. The trial is being conducted at the AHEPA University Hospital in Athens and proposes to recruit 30 patients between November 2012 and December 2015. All participants will be monitored for complications following the procedure, and changes in clinical condition, including Left Ventricular Ejection Fraction (LVEF) and myocardial perfusion.