Figure 1.
Dose-dependent anti-nociceptive effects of intrathecal clonidine. Mechanical withdrawal thresholds at baseline and 30 minutes following intrathecal (I.T.) injection of saline or clonidine (CL) 1, 3 or 10mg/kg in postnatal day (P) 3, 7 or 21 rat pups are shown. Data points = mean±SEM, n=6–8 per treatment group, *P<0.05 ***P<0.001 one way ANOVA with Dunnett’s comparison to baseline.