Fig. 3.

Maximum Likelihood tree of 276-bp vacA gene H. pylori isolated from saliva and stool samples of asymptomatic individuals from Northeastern Thailand. An asterisk indicates the 12 subjects from which the vacA gene in both saliva and stool samples were sequenced. In seven out of 12 pairs (Healthy 3, 151,153, 154, 158, 159 and 164), sequences of H. pylori detected from saliva samples were in a separate cluster to those from stool samples