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Figure 1 | Molecular Pain

Figure 1

From: Formalin injection causes a coordinated spinal cord CO/NO-cGMP signaling system response

Figure 1

Nociceptive behaviours displayed after formalin injection. In panel A the nociceptive behaviour of mice is presented as the total number of seconds spent licking in 5 minute intervals beginning with the injection of formalin. Some mice were pre-treated with a 10 mg/kg injection of morphine. In panel B, the time course of formalin-induced mechanical allodynia with and without morphine pre-treatment is displayed. Mechanical withdrawal thresholds were followed using von Frey fibers. Data are presented as mean licking times or thresholds +/- SEM, **p < 0.01.

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