title: [Citric acid in hard tissues].
mesh_terms: D000818:Animals; D002951:Citrates / Q000378:metabolism*; D002952:Citric Acid Cycle; D003094:Collagen / Q000032:analysis; D003743:Dental Enamel / Q000378:metabolism; D003804:Dentin / Q000378:metabolism; D006801:Humans; D014070:Tooth / Q000378:metabolism*
chemical_list: D002951:Citrates; D003094:Collagen