A sealing system comprising a cylinder head, a coupler, a fuel injector line, a seal retainer, and a seal. This frame is shaped in the form of a hollowed-out box whose large faces, intended to be traversed by the airflow conveyed by the unit, are held at a distance from each other in order to create between them a space for receiving the heating element. Based on this determination, each page is partitioned into a plurality of image areas. In addition, the service request terminal may easily verify the identity of the service providing terminal when the service request terminal re-visits the service providing terminal. The compositions and methods are also highly suitable for use in cosmetic procedures, in particular in transplantation of biological materials, especially for transplantation of autologous or allogeneic biological materials.