capillary blood vessel endothelium continuous capillary continuous blood vessel endothelium TAO:0005259 UBERON:2005259 NCIT:C32370 continuous endothelium continuous capillary vessel UMLS:C1179614 Blood vessel endothelium that has tight junctions between the endothelial cells[ZFA]. continuous blood vessel endothelium FMA:63195 ZFA:0005259 Wikipedia:Capillary#Types Capillary that has endothelial cells that provide an uninterrupted lining, and only allow small molecules, like water and ions to diffuse through tight junctions which leave gaps of unjoined membrane which are called intercellular clefts.