title: Helicobacter pylori colonization on tonsil tissue.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D015169:Colony Count, Microbial; D016480:Helicobacter pylori / Q000302:isolation & purification*; D006801:Humans; D014066:Palatine Tonsil / Q000382:microbiology* / Q000473:pathology