Transport pathways in capillaries--in search of pores.
D000818:Animals; D001921:Brain / Q000098:blood supply; D002196:Capillaries / Q000502:physiology / Q000648:ultrastructure*; D002199:Capillary Permeability; D003594:Cytoplasmic Granules / Q000502:physiology; D004058:Diffusion; D004727:Endothelium / Q000648:ultrastructure; D005110:Extracellular Space / Q000502:physiology; D006801:Humans; D007365:Intercellular Junctions / Q000648:ultrastructure; D008854:Microscopy, Electron / Q000379:methods