E. coli-Derived L-Asparaginase Retains Enzymatic and Cytotoxic Activity In Vitro for Canine and Feline Lymphoma after Cold Storage

Figure 7

Effect of freezing on asparaginase enzyme activity. Duration of freezing accounts for a minor portion of the statistical difference between cold storage groups. Post hoc tests did not identify a significant difference between either freezing durations compared to control. This verifies that frozen stocks retained enzyme activity up to 6 months similar to freshly prepared drug.