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| I. Neutralizing indices of immune hamster sera in cross-neutralization tests in mice (intraperitoneal inoculation): |
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| | Serum |
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| Virus | Hypr | RSSE (Sofin) | Absettarov | Louping ill |
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|
| | * In thousands | | Hypr | 158.5 * | 158.5 | 158.5 | 158.5 | | RSSE (Sofin) | 67.6 | 67.6 | 67.6 | 67.6 | | Absettarov | 1,600 | 1,600 | 1,600 | 1,600 | | Louping ill | 1,400 | 1,400 | 1,400 | 1,400 |
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| II. Cross-complement fixation tests with immune hamster sera: |
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| | Serum |
|---|
| Antigen | Hypr | RSSE (Sofin) | Absettarov | Louping ill |
|---|
|
| | ** Serum of titers | | Hypr | 32 ** | 8 | 8 | 16 | | RSSE (Sofin) | 16 | 16 | 8 | 8 | | Absettarov | 32 | 32 | 16 | 16 | | Louping ill | 16 | 32 | 4 | 16 |
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| I. and II. See Reference [4] . |
| III. Neutralization tests with immune horse gamma globulin (1:1000) against the strain Hypr [5] in HeLa cells: |
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| Neutralizing titers with viruses |
|---|
|
| | Hypr | 512 | Absettarov | 512 | | RSSE (Sofin) | 512 | OMSK | 1024 | | Kyasanur Forest dis | 512 | | |
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| IV. Negative results: |
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| | a) | Cross-neutralization tests in mice with WEE, EEE and Theiler FA viruses | | b) | Cross-CF tests with SLE, Jap. B, EMC, LCM and FA viruses |
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