vena cava molecular composition measurement vena cava ribonucleic acid level 2024-03-05T15:08:39Z CMO:0003980 PMID:36733943 This is any measurement of the absolute or relative amount(s) of one or more of the ribonucleic acids (RNAs) found in the largest veins (superior vena cava and inferior vena cava in mammals) which deliver de-oxygenated blood from throughout the body back to the right cardiac atrium. caval vein RNA level caval vein ribonucleic acid level clinical_measurement_ontology slaulederkind vena cava RNA level venae cavae RNA level venae cavae ribonucleic acid level