Jan Slezak is a Senior Scientist at the Centre of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, Bratislava, Slovakia. Since 1971, he has been primarily involved in national cardiovascular research projects, and has been carrying out research into experimental and/or molecular cardiology. He has been involved in basic academic research problems, such as artificial circulation and heart transplantation with special emphasis on the study of histochemical, cytochemical, immunocytochemical and ultrastructural changes in the myocardium under various experimental conditions e.g., ischemia and reperfusion injury, calcium paradox, an adaptation of the myocardium to ischemia, the effect of radiation on the cardiovascular system and prevention of its adverse effect, molecular hydrogen effect etc. His total number of papers is over 550, with 353 full-length publications (298 in journals, books, textbooks, and 55 proceedings). Total number of abstracts and short papers published is over 490 with citations < 2000.