The function of the cardiac or cardiovascular system is to pump oxygen-rich blood to the organs, tissues and cells of the body and to remove carbon dioxide and waste products. It also transports nutrients such as amino acids and electrolytes as well as hormones. Blood circulates through a network of arteries, veins, vessels and capillaries throughout the body. The cardiovascular system is therefore composed of the heart and the network that allows the blood to circulate.  Endothelial cells, myocytes, smooth muscle cells and fibroblasts are vital components necessary for the normal functioning of the circulatory system. Abnormal proliferation and regulation of cells in the cardiac system contribute to the development of cardiovascular diseases. We offer various biological samples from the cardiac system such as tissue blocks and sections but also primary cells: cardiomyocytes, aortic cells, coronary artery cells, pericardial cells and venous cells