en·do·the·li·um /ˌɛndəˈθiliəm/
  內皮細胞層,內覆組織
  en·do·the·li·um /ˌɛndəˈθɪlɪəm/ 名詞
  內皮(組織)
  En·do·the·li·um n.; pl. Endothelia   Anat. The thin epithelium lining the blood vessels, lymphatics, and serous cavities. See Epithelium.
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  endothelium
       n : an epithelium of mesoblastic origin; a thin layer of
           flattened cells that lines the inside of some body
           cavities
       [also: endothelia (pl)]