aorta wall morphological measurement aorta wall molecular composition measurement 2013-12-03T18:01:02Z Any quantitation of the molecules, atoms and/or ions which constitute the chemical make-up of the wall of the aorta, the layered tissue which encloses and constitutes the structural component of the great artery arising from the left ventricle from which the systemic arterial system proceeds. A molecule is an aggregation of atoms, specifically a chemical combination of two or more atoms forming a specific chemical substance. CMO:0001998 JSmith aortic wall molecular composition measurement clinical_measurement_ontology tissue molecular composition measurement