Figure 4: The moduli of elasticity, the ultimate strain, and ultimate stress of the group of pure PCL/PVA composite (type I) and the group of the PCL/PVA composite covered by HA layer (type II). There is a significant difference in the moduli of elasticity between these groups (determined by -test; ) (a) and also in the ultimate strain () (b), but not in the ultimate stress () (c). Mean is the mean value, SE is the standard error.