The gingival sulcus and the dental cutical.
D000818:Animals; D003743:Dental Enamel / Q000033:anatomy & histology*; D004848:Epithelium / Q000032:analysis / Q000033:anatomy & histology; D005881:Gingiva / Q000032:analysis / Q000033:anatomy & histology*; D006025:Glycosaminoglycans / Q000032:analysis; D000882:Haplorhini; D006801:Humans; D007633:Keratins / Q000032:analysis; D014070:Tooth / Q000032:analysis / Q000033:anatomy & histology
D006025:Glycosaminoglycans; D007633:Keratins