PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 22193222-6 2012 The degree of inflammation and MMP-1 expression of arthritic joints in old rats was significantly higher than that of young rats based on histological evaluation with hematoxylin and eosin (H&E) staining and immunochemistry. Hematoxylin 167-178 matrix metallopeptidase 1 Rattus norvegicus 31-36