Biohellenika selects bone marrow stem cells after aspiration of the iliac crest from patients that are undergone coronary by-pass. The cells after isolation in Biohellenika’s labs are injected directly to the cardiac muscle at the periphery of the infarct in the end of the surgery. The procedure is performed due to prior myocardiac infarction or chronic ischemic myocardiopathy. The stem cells usually develop angiogenesis in the next few months and rescue the "hibernating" myocardium. Clinical trials show that stem cells can improve cardiac function shortly after the administration.