encysted
  包裹的; 包繞的
  En·cyst·ed a. Inclosed in a cyst, or a sac, bladder, or vesicle; as, an encysted tumor.
     The encysted venom, or poison bag, beneath the adder's fang.   --Coleridge.
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  encysted
       adj : enclosed in (or as if in) a cyst