Reportage in a tissue and cell bank belonging to the EFS (French Blood Establishment). The bank抯 mission is to ensure France抯 self-sufficiency in cell and tissue products. The bank prepares. conserves and distributes human body products. Tissue is taken from donors and sent to the biobank. It is prepared in areas with a controlled atmosphere. then stored in freezers or liquid nitrogen containers. Preparing skin samples : measuring and packaging.