1. Conclusion The ultrastructure characteristics support that the origin of intracranial chondroma is brephic embryonic rest of osteoprogenitor cells in the basicranial periost.
论颅内软骨瘤由不典型的软骨细胞组成，超微结构检查显示其来源于软骨骨膜内残留的骨祖细胞。
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2. Conclusion The ultrastructure characteristics support that the origin of intracranial chondroma is brephic embryonic rest of osteoprogenitor cells in the basicranial periost.
