THE SUBMICROSCOPIC ORGANIZATION OF AXON MATERIAL ISOLATED FROM MYELIN NERVE FIBERS
نویسندگان
چکیده
منابع مشابه
The Submicroscopic Organization of Axon Material Isolated from Myelin Nerve Fibers
A technique has been developed for the extrusion of axon material from myelinated nerve fibers. This material is then compressed and prepared for observation with the electron microscope. All the stages of preparation and purification of the axon material can be checked microscopically and in the present paper they are illustrated with phase contrast photomicrographs. Observation with the elect...
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Degeneration of the myelin sheath in areas of the central nervous system is a characteristic feature of multiple sclerosis (Adams, 1977; Davison, 1978). The processes that cause this degradation of myelin during the course of the disease are not yet fully defined though the involvement of invading inflammatory cells is likely (Wisniewski, 1977). Any discussion on how the myelin sheath is attack...
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چکیده هدف از پژوهش حاضر بررسی رابطه کیفیت زندگی کاری و رفتار شهروندی سازمانی در مدارس مقطع متوسطه پسرانه شهر تهران از دیدگاه دبیران بود. روش پژوهش حاضر توصیفی و از نوع همبستگی بود. از بین دبیران مدارس شهر تهران تعداد 380 نفر به روش نمونه گیری خوشه ای چند مرحله ای به عنوان نمونه پژوهش انتخاب شدند و با تکمیل پرسشنامه ی کیفیت زندگی کاری والتون(1975) و پرسشنامه ی رفتار شهروندی سازمانی پودساکو...
15 صفحه اولMyelin Sheath Survival following Myelinated Nerve Fibers Axonal Degeneration
Axonal contact plays a critical role in initiating myelin formation by Schwann cells. However, recent studies of “double myelination” have indicated that myelin maintenance continues in Schwann cells completely displaced from physical contact with the axon. This raises the possibility either that diffusible trophic factors are produced by the axon, or that the axon is not required for myelin ma...
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ژورنال
عنوان ژورنال: Journal of Experimental Medicine
سال: 1953
ISSN: 1540-9538,0022-1007
DOI: 10.1084/jem.98.3.269