(A) Average keratinocyte Nav1.7 PI among upper and lower keratinocytes for ipsilateral biopsies (solid black and gray bars, respectively) and contralateral biopsies (open black and gray bars, respectively) from PNT1, PNT7, PNT14, and PNT 21 pigs (see Table 1, Part 2). (B) Ratios of lower divided by upper average keratinocyte Nav1.7 PI for ipsilateral and contralateral biopsies (solid and open bars, respectively). (A) and (B) show results from average ipsilateral Nav1.7 PI among upper and lower epidermal keratinocytes in PNT28 biopsies (solid black and gray bars, respectively) and ipsilateral Sham28 biopsies (open broken line black and gray bars, respectively), included from Fig. 4A and B.