目的：检测环上颌骨骨缝区增殖细胞核抗原阳性表达，探讨缝牵张促进上颌骨生长发育的作用。
AIM To detect proliferating cell nuclear antigen PCNA positive expression in suture cells around maxilla and explore the improvement of suture expansion on the growth and development of maxilla.
可以用来把宠物狗固定在后座上。从而提高乘客的安全性。牵狗的带子也可以固定在一个金属环上，有三中尺寸供应。
Suitable for securing dogs on the rear bench seat and thereby enhances passenger protection. A lead can also be secured to a metal ring. Available in three sizes.
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