highly significantP < 0.0001
For the Lower gradient, the stiffness variation between the softest (1.7 ± 0.3 kPa) and the stiffest region (2.0 ± 0.2 kPa) is highly significant ( P < 0.0001). 3.2.
For the Lower gradient, the stiffness variation between the softest (1.7 ± 0.3 kPa) and the stiffest region (2.0 ± 0.2 kPa) is highly significant ( P < 0.0001). 3.2.