Development of a Pain Measurement Device Using Electrical Stimulation and Pressure: A Pilot Study

Figure 5

Effect of carrageenan-induced paw edema in rats. Typical representative (a) macroscopic photographs and (b) histology of hind paws from the control, saline-treated, 1% 100 μl carrageenan-treated, 150 μl 1% carrageenan-treated, and 1% 200 μl carrageenan-treated groups.