Table 2.

The H. pylori infection results in different Mongolian gerbil groups every 5 weeks after infection for 85 weeks.

Week after infection	Total number of samples	Number of positive samples via 13C detection methods	Number of positive gastric tissue samples via nested PCR
5	6	2	2
10	6	2	5
15	6	3	6
20	5	0	5
25	6	4	6
30	6	0	6
35	6	6	6
40	5	2	5
45	5	5	5
50	4	3	4
55	5	1	5
60	6	0	6
65	6	4	6
70	6	1	6
75	6	5	6
80	5	5	5
85	5	4	5
Total	94	47	89
%	100.00%	50.00%	95.20%