Objective To study the pathological characteristics of primitive neuroectodermal tumor(PNET) of bone and soft tissue.
目的探讨原始神经外胚层瘤（PNET）的病理学特点及其临床意义。
They used primitive weapons made mostly of wood and bone .
他们的武器相当原始，主要是木材与骨头。
Despite primitive methods and materials, some of these early implants actually fused with the bone.
尽管材料和方法原始，但事实上这些早期的种植体已经和骨骼融合在一起了。
They can also arise in endochondral bone; or primitive mesenchymal cells in the brain, meninges, membranous bone, or soft tissue.
它们可以起源于软骨内骨、或者脑内的间充质细胞、脑膜、膜内成骨或者软组织。
They can also arise in endochondral bone; or primitive mesenchymal cells in the brain, meninges, membranous bone, or soft tissue.
它们可以起源于软骨内骨、或者脑内的间充质细胞、脑膜、膜内成骨或者软组织。
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