81，Ho S,Hoyle JA,Lewis FA et al.Direct polymerase chain reaction test for detection of Helicobacter pylori in humans and animals.J Clin Microbiol，1991；29:2543～5249
92，Mapstone NP,Lynch DAF,Lewis FA et al.Identification of Helicobacter pylori DNA in the mouths and stomachs of patients with gastritis using PCR.J Clin pathol，1992；46:540～543
103，Mapstone NP,Lynch DAF,Lewis FA et al.PCR identification of Helicobacter pylori in feces from gastritis patients.Lancet，1993；341:447
