“…Later, develop ment of such methods as ICP MS, electron probe microanalysis, SXRF and PIXE has led to the appear ance of the data concerning the investigation of the elemental composition and distribution of elements by different heart compartments, heart and aorta valves, vessels [35,49,88] and the investigation of intracellu lar elemental composition and distribution of ele ments in myocardium [31,138,143,148,152].…”