PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 30261431-4 2019 The competitive experiments were found to be highly selective for the Cd2+ ions even in the existence of excess competing metal ions including Zn2+, Pb2+, Hg2+ and Cu2+ ions. cupric ion 164-168 CD2 molecule Homo sapiens 70-73