%0 Journal Article %T Blood-brain barrier, half-time disappearance, and brain distribution for labeled enkephalin and a potent analog. %A Kastin, A J %A Nissen, C %A Schally, A V %A Coy, D H %J Brain Research Bulletin %V 1 %N 6 %P 583-9 %@ 0361-9230 %D 1977-05-12 %~ DeepDyve