Stock Photo - 12 December 2019, Hamburg: Arne Hansen, basic researcher at the Centre for Experimental Medicine at the UKE (Universitätsklinikum Eppendorf) is working on the production of engineered heart tissue (EHT). The mature artificial human heart tissue is approx. 6 mm long and contracts like natural human heart tissue. Since this is a human model, animal experiments are avoided. Photo: Axel Heimken/dpa. - Hamburg/Hamburg/Germany

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