鞘外的 [无脊椎] extrathecal
外鞘 Sheath ; [无脊椎] epitheca ; epitheca exotheca peritheca ; [无脊椎] exotheca
外根鞘 Outer Root Sheath ; ORS
外毛根鞘 outer root sheath
人毛囊外根鞘细胞 HHORSC
外根鞘细胞 ORSC ; out root sheath ; outer root sheath ; ORS
视神经外鞘 [解剖] outer sheath of optic nerve ; [解剖] vagina externa nervi optici
脑桥外髓鞘溶解症 extrapontine myelinolysis ; extropontine myelinolysis EPM ; EPM
毛球之上的细胞形成毛发，产生由分化的表皮细胞构成的同心环状区，形成内根鞘和外根鞘。
The hair is formed from cells just above the bulb, which also give rise to concentric zones of differentiated epithelial cells destined to form the inner and outer root sheaths.
毛干和内根鞘当到达体表时融合在一起：外根鞘仍然保持在原来的位置。
The hair shaft and inner root sheath move together as the hair grows toward the surface: the outer root sheath remains fixed in position.
目的探讨肺脏原发性恶性外周神经鞘瘤(MPNST)的临床病理学特征及诊断、鉴别诊断要点。
Purpose to investigate the clinical pathologic characteristics and to probe into the diagnosis and differential diagnosis of the primary malignant peripheral nerve sheath tumor (MPNST) of the lung.
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