The objective of this study was to evaluate how silver can be inserted into hydroxyapatite (HA) via two distinct processes: co-doping with CO32- via precipitation in an aqueous medium and immersion of preformed HA crystals into Ag+ solutions. It was concluded that although Ag+ and Ca2+ have different radii. the accommodation of Ag+ ions in the Ca2+ sites of the hydroxyapatite lattice ... https://www.chiggate.com/eeboo-memory-matching-game-animal-pre-school-supply/