title: Effect of betel-quid chewing on nitrite levels in saliva.
mesh_terms: D000328:Adult; D001114:Areca; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008409:Mastication; D009573:Nitrites / Q000032:analysis*; D009584:Nitrogen / Q000032:analysis; D010946:Plants, Medicinal; D010947:Plants, Toxic; D012463:Saliva / Q000032:analysis*; D014026:Nicotiana
chemical_list: D009573:Nitrites; D009584:Nitrogen