%0 Journal Article %T Carbon‐11 radiolabeling of an oligopeptide containing tryptophan hydrochloride via a Pictet‐Spengler reaction using carbon‐11 formaldehyde %A Hanyu, Masayuki %A Takada, Yuuki %A Hashimoto, Hiroki %A Kawamura, Kazunori %A Zhang, Ming‐Rong %A Fukumura, Toshimitsu %J Journal of Peptide Science %V 19 %N 10 %P 663-668 %@ 1075-2617 %D 2013-01-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve