Varying approaches in topographical modifications for guiding cell response. Figures adapted from Dalby et al. (2007), S. J. Kim, Jang, Park, and Min (2010), W. J. Li, Laurencin, Caterson, Tuan, and Ko (2002), Miller, Thapa, Haberstroh, and Webster (2004), Thanki et al. (2006), and Unadkat et al. (2011), with permission from Elsevier, Springer Nature, and Wiley