PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1260999-0 1976 The use of o-dianisidine for serum haptoglobin electrophoresis using cellulose acetate. Dianisidine 11-24 haptoglobin Homo sapiens 35-46 1260999-2 1976 Due to the carcinogenicity of benzidine, a method by which o-dianisidine is used to stain serum haptoglobin is described. Dianisidine 59-72 haptoglobin Homo sapiens 96-107