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。
Autografts on the other hand heal by endochondral ossification at these interfaces, and by membranous bone formation along the graft surface.
别一方面，自体骨移植是通过连接段的软骨内骨化和移植表面的骨膜成骨愈合。
A bone that forms directly in membranous connective tissue, as some cranial bones, instead of developing from cartilage.
不经过软骨雏型，而直接从膜状结缔组织骨化为骨的一种骨，如一些头胪骨。
Objective to observe the effect of bone regeneration guided by collagen membrane and evaluate the mechanism of autogenous bone marrow and membranous space in guided bone regeneration.
目的观察胶原膜引导骨再生的效果，探讨胶原膜的理化特性、自体骨髓、膜下空间的维持在引导性骨再生中的作用。
Objective to observe the effect of bone regeneration guided by collagen membrane and evaluate the mechanism of autogenous bone marrow and membranous space in guided bone regeneration.
目的观察胶原膜引导骨再生的效果，探讨胶原膜的理化特性、自体骨髓、膜下空间的维持在引导性骨再生中的作用。
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