di·a·pe·de·sis /ˌdaɪəpəˈdisəs/
  di·a·pe·de·sis /ˌdaɪəpəˈdɪsəs/ 名詞
  血細胞滲出
  Di·a·pe·de·sis n.  Med. The passage of the corpuscular elements of the blood from the blood vessels into the surrounding tissues, without rupture of the walls of the blood vessels.
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  diapedesis
       n : passage of blood cells (especially white blood cells)
           through intact capillary walls and into the surrounding
           tissue