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Sigma KEE - Feather
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Feather
Each instance of this class is one of the structures that make up the external covering of Birds.
Relationships      
Parents AnimalAnatomicalStructure AnatomicalStructures that are possessed exclusively by Animals.
  BodyPart 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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