Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Effect of intrathecal injection of drug combinations in the formalin test. A fixed dose of 0.3 μg SHG and 10 μg ketamine was used. The vertical axis is maximum possible effect (%) and the horizontal axis is dose (μg) of the opioid. (A) Effect of the combinations on phase 1 (0–1 min post formalin injection). (B) Effect of the combinations on phase 2 (15–61 min post formalin injection). Data are mean ± SEM. n = 6–7 rats per group.
