“…Stirred cultures were shown to have equal or better performance compared to static flask cultures, and could be operated at higher cell densities (Collins et al, 1998b). Other bioreactor configurations employed for the cultivation of HPC include flat bed perfusion devices (Jaroscak et al, 2003;Koller et al, 1998;Palsson et al, 1993;Sandstrom et al, 1996Sandstrom et al, , 1995, hollow fiber perfusion devices (de Kreuk et al, 2004;Knazek et al, 1990;Malone et al, 2001;Sardonini and Wu, 1993), rotating wall vessels (Liu et al, 2006), and airlift reactors (Sardonini and Wu, 1993).…”