PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23000748-16 2012 This observation offers perspectives for the development of a more selective PET tracer for beta-cell mass, based on an (11)C-hydroxytryptophan derivative with increased resistance toward degradation by MAO-A. 5-Hydroxytryptophan 126-143 monoamine oxidase A Homo sapiens 203-208