The invention relates to porous matrices based on a biologically
compatible polymer or polymer mixture, to a cell implantation that is
established on said matrices and to additional cell implantation based on
cell mixtures of hepatocytes and islets of Langerhans. The invention also
relates to a method for producing porous matrices, to matrices obtained
according to said method and to a special method for obtaining cells for
the inoculation of an implantable matrix.