ELECTRON MICROSCOPY: VESSELS: VASCULAR: CARDIOVASCULAR: VESSEL: Small blood vessel (capillary or venule); RCH/AMC22779, detail of the wall of a capillary or venule, rat uterus, continuous (non-fenestrated) endothelium, a dilated organelle-filled part of one endothelial cell is in the center of the field, endothelial junctional complexes, pericy