Fig. 2

Pgp9.5 and NFH-positive fibers in the joint capsule, anterior disc and retrodiscal tissues. (A) The left column shows pgp9.5-positive fibers (all sensory fibers), the middle column shows NFH-positive (A-fibers) fibers and the right column shows co-expressions of pgp9.5 and NFH-positive fibers in the mouse joint capsule, anterior disc and retrodiscal tissues. Pictures from the joint capsule, anterior disc and retrodiscal tissues as well as antibodies used and corresponding colors are indicated. Yellow arrows mark pgp9.5⁺/NFH⁺ fibers, and blue arrows show relatively thin pgp9.5⁺/NFH^- nerves. (B) Percentages of pgp9.5⁺/NFH⁺ and pgp9.5⁺/NFH^- nerves in the joint capsule, anterior disc and retrodiscal tissues. Statistics is 2-way ANOVA Bonferroni’s pot-hoc test (** p < 0.01; n = 5–6).