1. relating to or derived from the mesoderm. 
   关于中胚层，或由中胚层产生。
2. An internal supporting skeleton, derived from the mesoderm, that is characteristic of vertebrates and certain invertebrates. 
   骨骼体内支撑的骨骼，由中胚层而来的，是脊椎动物及某些无脊椎动物所特有的特性
3. The middle zone of the mesoderm of a chordate vertebrate embryo, from which excretory tissue develops. 
   中胚叶节脊索类脊椎动物胚胎的中胚层的中间部分，最终会发育成排泄组织
4. The middle germinal layer of an early embryo, consisting of undifferentiated cells destined to become the mesoderm. 
   中胚层早期胚的中间胚芽层，由最终将发育成中胚层的未分化细胞组成
5. The part of the embryonic mesoderm, consisting of loosely packed, unspecialized cells set in a gelatinous ground substance, from which connective tissue, bone, cartilage, and the circulatory and lymphatic systems develop. 
   间叶细胞胚胎的中胚层部分，由生长于胶状基质的、结构松散的、无特定功能的细胞组成，这些细胞将会发育成结缔组织、骨、软骨、血液及淋巴系统

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• 1. 中胚层；中层
  中鼠尾鳕（属） Mesobins...中胚层；中层 mesoblast; mesoblastema; mesoderm...中胚层的；中层的 mesoblastic
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