Fig. 2

Vein with muscle has better outcome than muscle alone on axonal regeneration after nerve injury. DiI-labeled motor neurons in L4-L6 segments in different groups seventy days after treatment. The nucleus of the motor neuron appears darker than the cytoplasm (arrows, a, b, c). The DiI-labeled neurons values are expressed as mean ± SD, n = 6, *p < 0.01 compared to the vein with muscle and the muscle only graft groups (d). Scale bar: 50 μm (a, b, c), Magnification × 400 (a, b, c)