Table 5 Stability of the transformed strain SL7207/pcDNA-CCOL2A1 during long-term storage
From: Transformed Salmonella typhimurium SL7207/pcDNA-CCOL2A1 as an orally administered DNA vaccine
Item | Storage time (days) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
2 days | 7 days | 15 days | 22 days | 36 days | 49 days | 70 days | 77 days | 91 days | 98 days | |
CFU/mL (× 109) | 2.65 | 2.59 | 1.44 | 1.49 | 1.66 | 2.35 | 1.51 | 1.11 | 1.83 | 1.53 |
Plasmid stability (%) | 96.59 | 91.42 | 95.36 | 90.47 | 102.69 | 95.02 | 95.38 | 101.52 | 101.86 | 97.24 |