Table 3.

(A) Cumulative amino acid concentrations without proline and cysteine of commercial CHO cell media. Percentage of amino acids in the sample compared to the initial medium concentration at the end of the exponential growth phase and at culture termination of (B) batch and (C) fed-batch experiments. Dark gray scale indicates amino acids which increased during the cultivation (cutoff = 120 %); light gray scale highlights amino acids which corresponded to ≤20 % of the initial medium concentration