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Schematic illustration of the protein accumulation and infiltration directly after a mild erosive attack (a,b). Acid-resistant proteins such as lysozyme, cystatin, statherin and albumin remain in the basal layer at the hydroxyapatite surface of the subsurface lesion (b). Other non-resistant proteins dissolve. The loosened proteinaceous network above the basal layer is removed by the acidic attack, and proteins can enter into deeper enamel structures (a,b).
