title: Significance of blood urea: gastric ammonia gradient for H. pylori detection in childhood.
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Nijevitch
authors.forename: Valentine V
authors.initials: VV
authors.lastname: Loguinovskaya
mesh_terms: D000293:Adolescent; D000641:Ammonia / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D005750:Gastric Juice / Q000737:chemistry*; D016481:Helicobacter Infections / Q000175:diagnosis*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D014508:Urea / Q000097:blood*
chemical_list: D000641:Ammonia; D014508:Urea