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The Vertebrate Trait Ontology (VT) is being developed as a collaborative effort between the Rat Genome Database at the Medical College of Wisconsin (RGD,, Mouse Genome Informatics at the Jackson Laboratory ( and the Animal QTL database at Iowa State University ( For more information about this vocabulary, or to request additions or changes, please contact us (

Term:circulatory system morphology trait
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Accession:VT:0100016 term browser browse the term
Definition:Any measurable or observable characteristic pertaining to the shape, structure, color, or pattern of the system that moves extracellular fluids to and from tissues.

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  vertebrate trait 5
    organ system trait 5
      circulatory system trait 0
        circulatory system morphology trait 0
          cardiovascular system morphology trait + 0
          lymphatic system morphology trait + 0
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