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Two-compartment systems

are non-instrumented, single-use bioreactors such as the CELLine that consist of a medium storage (compartment 1) and the production area as well as the production compartment (compartment 2). The cultivation chamber is separated from the medium storage by a semi-permeable membrane. The membrane (dialysis membrane) allows molecules and substrates to diffuse from the medium to the cells in the production compartment.