Table 3. H. pylori- specific IgG2a titers in the serum of H. pylori (strain SS1)-infected mice infected for 3 months.

IgG2a	WT	IL-17RA−/−	IL-17RB−/−
1	20	640	20
2	20	640	20
3	20	1280	20
4	20	>2560	BD
5	40	640	20
6	20	1280	BD
7	40	640	BD
8	320	640	40
9	BD	640	BD
10	20		BD
Average	55.6	995.6	13.3

(BD, below detection).