PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 28501180-0 2017 Detection of Abeta oligomers based on magnetic-field-assisted separation of aptamer-functionalized Fe3O4 magnetic nanoparticles and BaYF5:Yb,Er nanoparticles as upconversion fluorescence labels. ferryl iron 99-104 amyloid beta precursor protein Homo sapiens 13-18 28501180-1 2017 A sensitive and stable bioassay for the detection of Abeta oligomer (Abetao), a potentially promising candidate biomarker for Alzheimer"s disease (AD) diagnosis, was developed using Fe3O4 magnetic nanoparticles (MNPs) as the recognition and concentration elements and BaYF5:Yb,Er upconversion nanoparticles (UCNPs) as highly sensitive labels, conjugated with the Abetao aptamer (DNA1) and the complementary oligonucleotide of the Abetao aptamer (DNA2), respectively. ferryl iron 182-187 amyloid beta precursor protein Homo sapiens 53-58