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Toxin type classification system for C. perfringens.
| Type | Alpha | Beta | Epsilon | lota | Entero-toxin | netB∗ |
|---|---|---|---|---|---|---|
| A | + | - | - | - | - | - |
| B | + | + | + | - | - | - |
| C | + | + | - | +/- | - | |
| D | + | - | + | - | +/- | - |
| E | + | - | - | + | +/- | - |
| F | + | - | - | - | + | - |
| G | + | - | - | - | - | + |
Isolates are characterized by the production of one, or more, of the now six major toxins: alpha, beta, epsilon, iota, ∗necrotic enteritis like B and enterotoxin. Alpha toxin is produced by all types of C. perfringens (Rood et al., 2018).
