PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 465128-12 1979 The polarity and hydroxyproline content of elastin samples were slightly decreased after treatment with EDTA or dithioerythritol--urea--sodium dodecyl sulfate. dithioerythritol--urea--sodium dodecyl sulfate 112-158 elastin Homo sapiens 43-50