SEARCH Articles Figures Tables A new model acid-base cluster hypothesis Acid clusters Acid clusters Acid-base cluster hypothesis Amino acid cluster Cluster silver-amino acid Clusters acide-base reactions Clusters lanthanide amino acid complexes Hydration, neutral acid clusters Incorporation into acid clusters Ionic acid clusters Ionization, neutral acid clusters Neutral acid clusters Streptomyces clavuligerus clavulanic acid cluster Transition metal clusters acids