PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19867902-7 1915 According to the work of Nef, the group of substances under discussion has the property of dissociating to yield a halogen acid and an unsaturated alkylidene rest. unsaturated alkylidene 135-157 S100 calcium binding protein B Homo sapiens 25-28