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Figure 2 | Molecular Brain

Figure 2

From: Cingulate NMDA NR2B receptors contribute to morphine-induced analgesic tolerance

Figure 2

Antagonism of NR2B receptors in the ACC can reverse opioid analgesic tolerance compared to mice receiving saline in the ACC. (A) Analgesic tolerance in ACC cannulated mice developed over the seven-day test period. (B) Bilateral microinjection of Ro 256981 (1 μg in 1 μl, bilaterally, n = 7; filled circles) into the ACC significantly increased response latencies compared to mice receiving saline injections (n = 5; open circles) and to responses on Day 7.

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