Table A2.

Mean Young’s modulus values (GPa) measured by nanoindentation experiment. Values for overall digit (N = 32), proximal region only (N = 12), and distal region only (N = 20), with standard deviation in parentheses.

	Young’s Modulus, GPa
Sample	Digit	Proximal	Distal
D42 233	16.612 (3.103)	18.747 (2.598)	15.337 (2.686)
D42 234	15.496 (2.559)	16.726 (1.149)	14.759 (2.899)
D42 235	15.829 (2.235)	16.899 (2.069)	15.189 (2.125)
UA 233	16.453 (2.242)	15.781 (1.861)	16.856 (2.396)
UA 234	15.263 (1.994)	14.319 (2.236)	15.980 (1.584)
UA 235	18.354 (2.476)	18.241 (2.175)	18.422 (2.693)