Fig. 5From: Butterfly eyespot color pattern formation requires physical contact of the pupal wing epithelium with extracellular materials for morphogenic signal propagationChanges in eyespot size induced by additional nonbiological contact materials. R (reduction) is indicated at the bottom right in each panel. Red arrows indicate modified parafocal elements (PFEs), and blue arrows indicate modified submarginal bands (SMBs). Right (experimental) and left (control) posterior eyespots are enlarged below a whole butterfly image. a-d Silicone glassine paper. e, f Medical adhesive tape. g-l Copy paperBack to article page