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(a) Perfusion processes using UF ATF, run ATF#18 (triangle) or UF TFF, run TFF#21 (circle): viable cell density (plain symbols), viability (open symbols), and perfusion rate: ATF#18 (+), TFF#21 (x); (b) logarithmic viable cell density of runs ATF#18 and TFF#21 in comparison with MF HF perfusion in ATF#15A-B (+) and TFF#10 (x); (c) pCO2 (plain symbols) and average cell diameters (open symbols) for ATF#18 (triangle) and TFF#21 (circle) runs.
