PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 28134511-2 2017 These appear to be the only high-nuclearity metal peroxide complexes containing mu-eta1:eta2 peroxide bridges, and they are unique among uranyl peroxide cages. metal peroxide 44-58 secreted phosphoprotein 1 Homo sapiens 83-87