soma(to)-
6.The bad prognosis of nerve root injury due to two main factors:1. Proximal stump of the injury root which close to the soma contain less schwann cells and side branches. There is a disruption in the supply of neurotrophic factors coming from Schwann cell and target-organ ,leading to mass death of the motor neurons and lack of regeneration.
8.A total of 392 subjects (180 males and 212 females) of Hui farmers aged 20 to 50 were soma-totyped using Heath-Carter method.

