TABLE 2.
Comparison of the Lewis antigen distribution in the LPS fraction from 59 smooth strains of H. pylori and the antigenicity of these LPS fractions in humans
| Expression of Lewis antigena | No. of strains | No. of strains showing indicated level of antigenicity in humansb
|
||
|---|---|---|---|---|
| ++ | + | − | ||
| Lex | ||||
| + | 28 | 11 | 7 | 10 |
| − | 31 | 9 | 12 | 10 |
| Ley | ||||
| + | 29 | 10 | 9 | 10 |
| − | 30 | 10 | 10 | 10 |
| Lea | ||||
| + | 5 | 3 | 0 | 2 |
| − | 54 | 17 | 18 | 19 |
| Leb | ||||
| + | 7 | 2 | 3 | 2 |
| − | 48 | 18 | 16 | 18 |
a
Lewis antigen expression reported in reference 2 was determined by immunoblotting with anti-Lewis antigen monoclonal antibodies. Lex, Ley, Lea, Leb, Lewis X to Lewis b antigens, respectively.
b
Antigenicity was expressed as the mean value of A450 for 10 human serum samples positive for H. pylori infection: ++, >0.6; +, >0.15 to <0.6; −, <0.15.