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(a) Protein gene product 9.5 (PGP9.5) immunoreactivity in calfskin from healthy volunteers, HV, (b) painful-diabetic peripheral neuropathy (DPN), (c) painless-DPN, and (d) No-DPN. (e) Mean ± SEM of the PGP9.5 intra-epidermal fibers (fibers/mm). (f) Image analysis of PGP9.5 sub-epidermal counts (% immunoreactivity) in the same groups (HV, painful-DPN, painless-DPN, No-DPN).
