GAP43 and neuroblastoma: developed a process that combines electrospinning, spray coating, and solid‐state polymerization to create scaffolds with aligned and random fibers.[51] For biological analysis, they used a neuroblastoma‐derived human cell line (SH‐SY5Y) to assess cell maturation on random and aligned eumelanin microfibers through confocal analyses and specific markers for differentiating neurons (expression of βIII tubulin and GAP‐43).