the vascular lumen is always separated from the thymic parenchyma by : the endothelial cell cytoplasm , a muscular coat in arterioles and veins , the vascular basal lamina , a perivascular space containing collagen fibers and cells , the epithelial-reticular cell basal lamina and the epithelial-reticular cell cytoplasm .
C0007634
cells
C0010834
cytoplasm