In vitro expansion of autonomously contracting, cardiomyogenic structures from rainbow trout Oncorhynchus mykiss


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In primary cell preparations from larvae of rainbow trout Oncorhynchus mykiss, the formation of autonomously contracting cell aggregates was observed after 7 days. These contracting elements could be propagated and some aggregates were maintained over a period of 35 days. Electron microscopical and immunocytochemical examination revealed the presence of cardiomyocytes.