title: A lingual vitamin C test: I. Reproducibility.
mesh_terms: D001205:Ascorbic Acid / Q000032:analysis*; D002624:Chemistry, Clinical; D002986:Clinical Trials as Topic; D006801:Humans; D007215:Indophenol; D008722:Methods; D013997:Time Factors; D014059:Tongue
chemical_list: D007215:Indophenol; D001205:Ascorbic Acid