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| Homology (%) | GIV-C5 | GIV-C4 | GIV-C3 | GIV-C2 | GIV-C1 |
| GIV-C5 | 98.0–100.0 | – | – | – | – |
| GIV-C4 | 95.8–97.0 | 98.7 | – | – | – |
| GIV-C3 | 92.8–94.2 | 95.8–96.8 | 98.0–99.8 | – | – |
| GIV-C2 | 93.8–96.8 | 95.4–97.0 | 94.6–96.4 | 98.0–99.6 | – |
| GIV-C1 | 91.0–91.9 | 92.5–93.4 | 91.9–93.6 | 93.0–94.2 | 99.5 |
