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Figure 4: Boxwhiskers plot of collagen fi bers. (a– e) Comparisons of parameters derived from circular statistics of collagen fi bers. The boxes extend from 25 to 75%, with a line at the median. There was no difference between the soft and stiff groups in the parameters of circular analysis (circular variance, circular standard deviation, and circular dispersion; mean resultant length and von Wiese concentration; skewness and kurtosis) (P > 0.05). 
