Table 3 Differences in the characteristics of transformed and blank SL7207 strains
From: Transformed Salmonella typhimurium SL7207/pcDNA-CCOL2A1 as an orally administered DNA vaccine
Strain | Appearance | OD600 | Upper liquid | Sedimentation characteristics | Colony size | Colony morphology |
|---|---|---|---|---|---|---|
SL7207 | High turbidity | > 3.50 (3.68–4.50) | Turbid | Slow settling, white powdery sediment, rapid dispersal after shaking | Relatively small | Compact, whitish |
SL7207/pcDNA-CCOL2A1 | Lower turbidity than SL7207 | < 3.00 (2.17–2.95) | Clear | Fast settling, viscous ribbon sediment, difficult dispersal, and persistent ribbon flocs after shaking | Relatively large | Mellow, translucent |