TABLE 3.
Cross-neutralization titers of parental and chimeric FCVs by rabbit anti-FCV hyperimmune serum
| Serum | NTa
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| URB | NADC | KCD | CFI | U/NE | U/KE | U/NEL | U/NER | U/CEL | U/NCDE | |
| URB | 8,192 | 256b (32) | 128 (64) | 128 (64) | 256 (32) | 256 (32) | 1,024 (8) | 512 (16) | 1,024 (8) | 512 (16) |
| NADC | 128 (512) | 65,536 | 1,024 (64) | 64 (1,024) | 2,048 (32) | 4,096 (16) | 2,048 (32) | 512 (128) | 256 (256) | 8,192 (8) |
| KCD | 32 (2,048) | 64 (1,024) | 65,536 | 32 (2,048) | 64 (1,024) | 32,768 (2) | 64 (1,024) | 16 (4,096) | 64 (1,024) | 128 (512) |
| CFI | 64 (512) | 128 (256) | 256 (128) | 32,768 | 128 (256) | 1,024 (32) | 64 (512) | 32 (1,024) | 1,024 (32) | 512 (64) |
| U/NE | 128 (512) | 1,024 (64) | 256 (256) | 128 (512) | 65,536 | 2,048 (32) | 2,048 (32) | 512 (128) | 2,048 (32) | 2,048 (32) |
| U/KE | 128 (2,048) | 32 (8,192) | 2,048 (128) | 128 (2,048) | 256 (1,024) | 262,144 | 256 (1,024) | 256 (1,024) | 1,024 (256) | 512 (512) |
| U/NEL | 1,024 (64) | 2,048 (32) | 512 (128) | 256 (256) | 512 (128) | 128 (512) | 65,536 | 512 (128) | 2,048 (32) | 4,096 (16) |
a
Reciprocal of highest dilution giving complete neutralization. Boldface indicates homologous NT; italicized values are NTs obtained for parental viruses versus parental hyperimmune serum; values in parentheses represent fold decrease of NT of heterologous virus from homologous virus.
b
NT of heterologous virus.