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| TABLE 2.6 Cannabinoid Receptors |
| CB1 | CB2 | |
| Effects of various cannabinoids | ||
| Agonist | Weak antagonist | |
| Anandamide | Agonist | Agonist |
| Cannabinol | Weak agonist | Agonist; greater affinity for CB2 than for CB1 |
| Cannabidiol | Does not bind to receptor | Does not bind to receptor |
| Receptor distribution | ||
| Areas of greatest abundance | Brain | Immune system, especially B cells and natural killer cells |