PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 27565930-2 2016 MATERIALS AND METHODS: The peptide nucleic acid-locked nucleic acid polymerase chain reaction clamp method was used to detect mutations in exons 18, 19, 20, and 21 of the EGFR gene in DNA samples extracted from paraffin-embedded tissue sections. Paraffin 211-219 epidermal growth factor receptor Homo sapiens 171-175