PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2444033-0 1987 [Serum alpha 1-antitrypsin and alpha 2-macroglobulin levels in persons exposed to benzene, hydrogen cyanide, sulfur dioxide and nitrogen dioxide]. Sulfur Dioxide 109-123 alpha-2-macroglobulin Homo sapiens 31-52