title: Longitudinal age-related changes in human parotid saliva composition.
mesh_terms: D000375:Aging / Q000378:metabolism*; D003430:Cross-Sectional Studies; D004573:Electrolytes / Q000032:analysis; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010306:Parotid Gland / Q000378:metabolism / Q000502:physiology*; D012463:Saliva / Q000032:analysis* / Q000378:metabolism
chemical_list: D004573:Electrolytes