title: Humans' thick enamel tied to natural selection.
mesh_terms: D003743:Dental Enamel / Q000033:anatomy & histology*; D003746:Dental Enamel Proteins / Q000235:genetics; D005786:Gene Expression Regulation / Q000235:genetics; D006801:Humans; D053519:Matrix Metalloproteinase 20 / Q000235:genetics; D009805:Odontogenesis / Q000235:genetics; D012641:Selection, Genetic / Q000235:genetics*
chemical_list: D003746:Dental Enamel Proteins; C507111:MMP20 protein, human; D053519:Matrix Metalloproteinase 20