PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 4980309-2 1969 beta-N-Acetyl-glucosaminidase and beta-galactosidase were removed from the preparation by treatment with pyridine. pyridine 105-113 galactosidase, beta 1 Rattus norvegicus 34-52