Since the Tissue Act came into force, the collection of biopsies for the production of cell transplants has been subject to authorisation in accordance with Section 20b(1) or (2) of the German Medicines Act (AMG). This means that each clinic must obtain its own authorisation for collection and provision of biopsies for the cultivation of autologous cells in accordance with Section 20b(1) AMG or authorisation through a contractual agreement with a manufacturer such as DIZG in accordance with Section 20b(2) AMG.