<qa>  What is the proposed protocol for patients with chronic ischemic heart disease?Our proposed research protocol involves patients with chronic ischemic heart disease and left ventricular dysfunction undergoing coronary artery bypass grafting CABG. In this phase II clinical trial, prospective, randomized, 2 arm, double-blind, placebo-controlled study, we will assess the safety, feasibility and functional effect of intra-myocardial injection of highly selected autologous CD133 bone marrow stem cells to placebo. 