part of part of adjacent to adjacent to tissue heart endocardium myocardium cardiac jelly EMAPA:32687 EHDAA:458 EHDAA:474 EHDAA:772 EHDAA:450 TAO:0001318 EHDAA:1922 NCIT:C34115 UMLS:C1516293 ZFA:0001318 EHDAA:808 The extracellular matrix between the myocardium and the endocardium. The cardiac jelly plays a central role in the septation of the heart and comprises most of the thickness of the heart wall at early stages, but disappears as the heart differentiates.[TAO] Portion of extracellular matrix between the myocardium and the endocardium. The cardiac jelly plays a central role in the septation of the heart and comprises most of the thickness of the heart wall at early stages, but disappears as the heart differentiates. UBERON:0003906 RETIRED_EHDAA2:0000212 EHDAA:1271 EHDAA:788 EHDAA:800 EHDAA:426 VHOG:0000936 EHDAA:466 heart cardiac jelly EHDAA:442 EHDAA:1279 EHDAA:780 EHDAA:1930 XAO:0004120