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Phosphatidylcholine vesicles harboring the lipophilic metal ion carrier A23187 in the bilayer and encapsulating ethylenediamine tetraproprionate (EDTP) selectively sequester Cu 2+ , Pb 2+ , and Cd 2+ from dilute aqueous solution at neutral to acidic pH. At pH 7.0, individual metal ion uptake experiments reveal up to a 3-fold difference in permeability and capacity...
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