Time-dependent differences of repeated administration with Δ9- tetrahydrocannabinol in proenkephalin and cannabinoid receptor gene expression and G-protein activation by μ-opioid and CB1-cannabinoid receptors in the caudate-putamen

1. Corchero, J.
2. Romero, J.
3. Berrendero, F.
4. Fernandez-Ruiz, J.
5. Ramos, J.A.
6. Fuentes, J.A.
7. Manzanares, J.