Table 1.

Material constants

	Normal	2dEGF	4dEGF	7dEGF	14dEGF
a1a	25.42 ± 1.91	18.19 ± 2.80	19.32 ± 3.91	11.57 ± 2.04b	13.61 ± 3.00b
a2a	21.51 ± 3.19	36.24 ± 0.95b	24.90 ± 3.72	34.74 ± 5.17b	27.51 ± 4.41
a4	6.41 ± 1.20	12.20 ± 2.98	7.13 ± 3.53	5.39 ± 1.29	4.78 ± 1.15
C (kPa)	1.13 ± 0.18	1.30 ± 0.27	2.32 ± 0.97	1.75 ± 0.30	1.02 ± 0.12

A: One-way ANOVA result: P < 0.05; B: Post analysis (Dunnet´s test) result: significantly different from normal control group (P < 0.05).