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Main biochemical characteristics of EIEC according to serogroup and phylogroup
| Serogroup | No. of strains | Phylogroup | Lactose fermentation | Motility | Lysine decarboxylation | Indole production |
|---|---|---|---|---|---|---|
| O28ac | 1 | B1 | + | - | - | - |
| 2 | B1 | + | - | - | + | |
| O29 | 5 | B1 | + | - | - | + |
| O124 | 4 | A | - | - | - | - |
| 2 | A | - | + | - | + | |
| O136 | 6 | A | - | - | - | - |
| O143 | 10 | E | + | - | - | + |
| O144 | 5 | A | + | - | - | + |
| O152 | 6 | A | - | - | - | + |
| O164 | 1 | B2 | + | - | - | + |
| 1 | C | + | - | - | + | |
| 1 | B1 | - | - | - | + | |
| 1 | A | - | - | - | + | |
| O167 | 5 | E | + | - | - | - |
| 1 | A | + | - | - | +w |
wweak reaction
