Expression and localization of avian markers by immunochemistry in FFs associated with growing feathers during cultivation <i>in vitro</i>.

Formalin-fixed FFs embedded in paraffin were sectioned and stained with trichrome Masson (A), or labelled with the following antibodies: anti-fibronectin (B), anti-pan-cytokeratin (C), and anti-scaffoldin (D). Staining was performed after microdissection and at 3, 5 and 7 days of cultivation ex vivo. Bar represents 500 μm.