Figure 1From: Metabolic and Kinetic analyses of influenza production in perfusion HEK293 cell cultureComparison of batch (A, C) and perfusion (B, D) culture processes for cell growth (A, B) and influenza production (C, D). Viable (black circles), dead (up grey triangles), and total (grey diamonds) cell densities were plotted with viability (dashed lines) and HA titers (grey bars) over time. The perfusion was started at 48 h of culture.Back to article page