SEARCH Articles Figures Tables A Equilibria between Isomeric Ions Differing in the Site of Proton Attachment Calcium ion binding sites Coordination sites in host mineral structures accommodating transition metal ions Coordination sites lanthanide ions Coordination sites luminescence, lanthanide ions Counter-Ion-Assisted Site Epimerization Formation of Active Sites by Ion Exchange Ion binding sites Ion-Exchange Sites Manganese ion binding sites at RNA duplexes Manganese ions binding sites Metal Ion Sites Number, Composition, and Population Analysis Metal ion binding site Metal ion dependent adhesion site Metal ion-binding sites in proteins Site-bound ions, polyelectrolyte-counterion Sites for ions