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  Feather

Sigma KEE - Feather

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羽毛
Each instance of this class is one of the structures that make up the external covering of Birds.
Relationships      
Parents 动物解剖结构 AnatomicalStructures that are possessed exclusively by Animals.
  身体部位 A collection of Cells and Tissues which are localized to a specific area of an Organism and which are not pathological. The instances of this Class range from gross structures to small components of complex Organs.


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