Table 2 Invasion of HeLa cells by S. flexneri clinical isolates as determined by plaque formation tests
Gene detected by mPCR | Number of strains | Plaque formation number (per well)* | ||
|---|---|---|---|---|
ipaH | ial | set1B | ||
+ | + | + | 9 | >200±16 |
+ | + | - | 1 (SF51) | 20±5 |
+ | - | + | 1 (SF68) | 4±2 |
+ | - | - | 1 (SF36) | 2±1 |