Abstract
The structural change of endothelial cells is responsible for the increased transport of lipid proteins into the arterial wall, the formation of thrombus and then the development of atherosclerosis. The endothelial injury is discussed under the microfluid mechanical interaction of blood flow and arterial wall. Some microrheological factors affecting the structure of endothelial cells are elucidated from a stand-point of fine structures of blood flow near the wall with a sticking white cell and near the wavy (or protuberant) wall.