heart left ventricle ribonucleic acid level heart left ventricle myocardium ribonucleic acid level clinical_measurement_ontology caripark PMID:41022776 2026-03-17T07:48:19Z GEO:GSE282713 CMO:0004139 VT:0011039 This is any measurement of the absolute or relative amount(s) of one or more of the ribonucleic acids (RNAs) found in the thick contractile middle layer of uniquely constructed and arranged muscle cells that forms the bulk of the heart left ventricle wall. heart left ventricle myocardium RNA level