PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12205730-3 2002 Our purpose, in this study was to assess pyridinium crosslinks (PYD and DPYD) excretion in relation to the activity of RA (changes related to sulphasalazine treatment). pyridine 41-51 dihydropyrimidine dehydrogenase Homo sapiens 72-76