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Mineral density value distribution. A) Single digit histograms compare individual unamputated (UA) and regenerated (D42) digits, showing the probability (frequency) and spread (density value range) of density values. Best fit curve with normal distribution. N = 1 UA, N = 1 D42. B) Right lateral view of full mineral density spectrum for both digits, showing distinctly contrasting spatial distribution of mineral density. N = 3 UA, N = 3 D42. Representative images shown.
