In the ribs of control group (non-fractured part), only mesenchymal cells of periosteum and skeletal muscle fiber showed nerve growth factor stained lightly.
对照组(非骨折部位)的肋骨，只有骨膜的间质细胞及骨骼肌纤维显示神经生长因子轻度着色。
2
When a liver or kidney or both are found violative (in excess of the MRL) but the skeletal muscle is negative or non-violative, then only the organs shall be condemned.