blas·te·ma /blæˈstimə/
  原基; 胚基; 胚莖; 芽基
  blas·te·ma /blæˈstɪmə/ 名詞
  (再生)芽基,胚基
  Blas·te·ma n.; pl. Blastemata   Biol. The structureless, protoplasmic tissue of the embryo; the primitive basis of an organ yet unformed, from which it grows.
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  blastema
       n : a mass of undifferentiated cells from which an organ or body
           part develops
       [also: blastemata (pl)]