vena cava molecular composition measurement vena cava ribonucleic acid level venae cavae ribonucleic acid level venae cavae RNA level PMID:36733943 CMO:0003980 caval vein ribonucleic acid level clinical_measurement_ontology caval vein RNA level 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. vena cava RNA level slaulederkind 2024-03-05T15:08:39Z