abnormal kidney blood vessel morphology abnormal capillary morphology abnormal kidney capillary morphology 2011-10-12T01:46:04Z MP:0011310 MPheno.ontology any structural anomaly of the small branching blood vessels in the kidney that form a network between the arterioles and venules, where the exchange of water, oxygen, carbon dioxide, and other nutrient and waste chemical substances occurs between the blood and the surrounding tissues csmith