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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:platelet quantity
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Accession:VT:0003179 term browser browse the term
Definition:The proportion or number of the disc-like fragments of megakaryocytes that are found in the blood and function in clotting.
Synonyms:exact_synonym: platelet count;   platelet number

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  vertebrate trait 2888
    organ system trait 1978
      hemolymphoid system trait 51
        hemolymphoid system morphology trait 45
          hematopoietic system morphology trait 45
            blood cell morphology trait 21
              platelet morphology trait 3
                platelet quantity 0
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