Before revision: According to Zhu and his colleagues, transparent wood in the longitudinal direction has an elastic modulus of 2.37 GPa and strength of 45.38 MPa (both which are lower than for pure PMMA) and twice as high as those perpendicular to the longitudinal direction, 1.22 GPa and 23.38 MPa respectably .
After revision: According to Zhu and his colleagues, transparent wood in the longitudinal direction has an elastic modulus of 2.37 GPa and strength of 45.38 MPa (both which are lower than for pure PMMA) and twice as high as those perpendicular to the longitudinal direction, 1.22 GPa and 23.38 MPa respectively .