thoracic aorta morphology trait thoracic aorta molecular composition trait 2013-07-11T12:36:42Z Any measurable or observable characteristic related to the proportions of proteins, minerals, nutrients, gases, or other substances in the part of the descending aorta superior to the aortic hiatus of the diaphragm. CMO:0002002 CMO:0002003 Trait.ontology VT:0010568 caripark aorta molecular composition trait