PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7864888-3 1995 Here we report that a human medullary thyroid carcinoma cell line, the TT cell line, harbours a MEN2A-type mutation, specifically a cysteine to triptophan substitution at the level of the RET codon 634. triptophan 144-154 ret proto-oncogene Homo sapiens 96-101 7864888-3 1995 Here we report that a human medullary thyroid carcinoma cell line, the TT cell line, harbours a MEN2A-type mutation, specifically a cysteine to triptophan substitution at the level of the RET codon 634. triptophan 144-154 ret proto-oncogene Homo sapiens 188-191