Background: Glial cell line-derived neurotrophic factor (GDNF), produced by basal cell keratinocytes, is a neurotrophic factor that plays diverse developmental roles and together with its cognate receptor (GFR Rα-1) are distal members of the transforming growth factor- β super family. To date, their expression pattern in lichen planus is still unknown. Objectives: To investigate the immunohis to chemical expression patterns ... Read more