Table 1.
OT strains used in this study
| Strain name | Subtypea | Geographic origin | Year of isolation | Ref. |
|---|---|---|---|---|
| Ikeda | JG | Japan/Niigata pref. | 1979 | 28 |
| Boryong | not defined | Korea/Boryong pref. | 1995 | 29 |
| Gilliam | Gilliam | Myanmar | 1943 | 30 |
| Kato | Kato | Japan/Niigata pref. | 1955 | 31 |
| Karp | Karp | New Guinea | 1943 | 32 |
| Matsuzawa | JP-1 | Japan/Niigata pref. | 1984 | 10 |
| 423H | JP-2 | Japan/Niigata pref. | 1984 | 11 |
| Kuroki | Kuroki | Japan/Miyazaki pref. | 1981 | 33 |
| Kawasaki | Kawasaki | Japan/Miyazaki pref. | 1981 | 34 |
| Shimokoshi | Shimokoshi | Japan/Niigata pref. | 1980 | 28 |
aSubtypes of each strain are derived from Ohashi et al.11