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The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories ( For more information about these ontologies, see the MGI Publications Page at

Term:decreased hematopoietic stem cell number
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Accession:MP:0004810 term browser browse the term
Definition:reduced cell count of the multipotent, self-renewing stem cells found in the bone marrow, yolk sac and the fetal liver; HSCs give rise to all the types of both the myeloid and lymphoid cell lineages
Synonyms:exact_synonym: decreased HSCs;   decreased haematopoietic progenitor cell number;   decreased haematopoietic stem cell number;   decreased haemopoietic progenitor cell number;   decreased hematopoietic progenitor cell number;   decreased hemopoietic progenitor cell number;   reduced haematopoietic stem cell number;   reduced hematopoietic stem cell number
 narrow_synonym: decreased LSK cell number
 related_synonym: decreased number of hematopoietic stem cells

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  mammalian phenotype 5372
    hematopoietic system phenotype 243
      abnormal hematopoietic system morphology/development 223
        abnormal hematopoietic cell morphology 179
          abnormal hematopoietic cell number 141
            decreased hematopoietic cell number 95
              decreased hematopoietic stem cell number 0
                absent hematopoietic stem cells 0
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