"3D-Heart-2B", scientists from the Clinic for Cardiac, Thoracic, Transplantation and Vascular Surgery (HTTG) and the Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO) want to develop [...] undergo a so-called Fontan operation in childhood, in which the circuits are separated," explains HTTG Clinic Director Professor Dr Axel Haverich. However, the incomplete heart still has a reduced pumping [...] undergo a so-called Fontan operation in childhood, in which the circuits are separated," explains HTTG Clinic Director Professor Dr Axel Haverich. However, the incomplete heart still has a reduced pumping