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The diaphysis (〔''OED'' 2nd edition, 1989, as .〕〔(Entry "diaphysis" ) in ''(Merriam-Webster Online Dictionary )''.〕) is the main or midsection (shaft) of a long bone. It is made up of cortical bone and usually contains bone marrow and adipose tissue (fat). It is a middle tubular part composed of compact bone which surrounds a central marrow cavity which contains red or yellow marrow. In diaphysis, primary ossification occurs. Ewing's sarcoma tends to occur at the diaphysis.〔Physical Medicine and Rehabilitation Board Review, Cuccurullo〕 ==Additional images== Illu long bone.jpg File:EpiMetaDiaphyse.jpg|Long bone 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Diaphysis」の詳細全文を読む スポンサード リンク
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