Fig 1.

Figures showing pre-drug mechanical withdrawal threshold (MWT) to a pinch of increasing magnitude applied to the mid-region (i.e., area of secondary hyperalgesia) of the ipsilateral hind paw in UVB and heat rekindled (UVB/HR) and SHAM-treated rats. An example of raw data from a pre-drug recording is demonstrated in (Ai) from a UVB/HR rat and (Aii) from a SHAM-treated rat. Scale bars correlate to both (Ai) and (Aii). (B) Scatter plot showing overall pre-drug MWT in UVB/HR (n = 15) and SHAM-treated rats (n = 8). Each point represents data from an individual animal 4 days after initial UVB treatment or SHAM treatment. Horizontal lines represent mean ± standard error of the mean. **p < 0.01, unpaired t-test.