A high affinity, highly selective ligand for the delta opioid receptor: [3H]-[D-PEN2, pCl-PHE4, D-PEN5]enkephalin
1993 ◽
Vol 268
(31)
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pp. 23055-23058
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2000 ◽
Vol 10
(11)
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pp. 1281-1284
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Keyword(s):
1991 ◽
Vol 180
(2)
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pp. 822-827
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