Deletion of the δ opioid receptor gene impairs place conditioning but preserves morphine reinforcement
- Le Merrer, J.
- Plaza-Zabala, A.
- Del Boca, C.
- Matifas, A.
- Maldonado, R.
- Kieffer, B.L.
ISSN: 0006-3223
Year of publication: 2011
Volume: 69
Issue: 7
Pages: 700-703
Type: Article