TABLE 2.
Phenotypic expression of type 1 fimbriae by serovar Typhimurium
| Strain | Plasmid (relevant genotype) | Serum titera | Slide agglutinationb | Hemagglutination titerc | Presence of fimbriae on bacteriad |
|---|---|---|---|---|---|
| LB5010 | None | 80 | + | 8 | + |
| LBY100 | None | <20 | − | <2 | − |
| pISF215 (fimY+) | 640 | + | 32 | ND | |
| pISF217 (fimY) | <20 | − | <2 | ND | |
| SL1344 | None | 2,560 | + | 16 | + |
| SL1344JTY | None | 20 | − | <2 | − |
| pISF215 (fimY+) | 10,240 | + | 32 | ND |
a
Reciprocal of the highest serum dilution causing bacterial agglutination.
b
Agglutination by fimbria-specific polyclonal antisera observed after 60 s. +, present; −, absent.
c
Reciprocal of the highest bacterial dilution causing hemagglutination.
d
Fimbriae observed by transmission electron microscopy. +, present; −, absent ND, not done.