TABLE 1.
Characterization of the H. pylori strains used
| Strain | Expression ofa:
|
Origin | |||
|---|---|---|---|---|---|
| CagPAI | VacAb | Lewis blood group antigens | BabA | ||
| Hel 73 | + | s1/m1 | x | ND | AS |
| Hel 305 | + | s1/m1 | x | + | DU |
| Hel 312 | + | s1/m1 | x | − | AS |
| Hel 301 | + | s2/m? | + | DU | |
| Hel 325 | + | s1/m2 | − | DU | |
| Hel 314 | IM | s1/m2 | − | AS | |
| Hel 333 | − | s2/m2 | a, b | ND | DU |
| Hel 340 | + | s1/m2 | x, y | + | AS |
| CCUG 17874 | + | s1/m1 | ND | Reference strain | |
a
+, positive; −, negative; IM, intermediate (deletion of genes 6, 13 to 19, and 21 to 28 of CagPAI); ND, not done; AS, AS individuals; DU, DU patients.
b
s, signal sequence; m, middle region; ?, unable to detect the m region in this strain.