来自宾夕法尼亚大学的克里斯托弗·陈(音译)培育了间质干细胞薄片，并将其置于有助于骨骼和骨髓发育的混合生长因子中。
Christopher Chen of the University of Pennsylvania grew flat sheets of mesenchymal stem cells and exposed them to a mixture of growth factors for bone and marrow development.
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。
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。
In the ribs of control group (non-fractured part), only mesenchymal cells of periosteum and skeletal muscle fiber showed nerve growth factor stained lightly.
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