Figure 4

(a) Box-and-whisker diagrams of cell alignment angle (\(\uptheta\)) with respect to groove patterns. (b) The percentage cell population (\({{P}}_{\uptheta \le 2^\circ }\)) within \(\theta \le 2^\circ\) under different lateral conditions (\({{\text{G}}}_{{\text{w}}}\) and \({{\text{R}}}_{{\text{w}}}\)).