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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:immune system organ morphology trait
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Accession:VT:0002722 term browser browse the term
Definition:Any measurable or observable characteristic related to the shape, structure, color, or pattern of the organs associated with the body's defense against foreign organisms or substances and aberrant native cells.
Synonyms:related_synonym: lymph organ morphology trait

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thymus integrity trait term browser
Symbol Object Name Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
Q Tls1 T-lymphoma susceptibility QTL 1 IDA RGD PMID:10360666 RGD:619600 NCBI chr 5:90,450,144...135,450,144 JBrowse link
Q Tls2 T-lymphoma susceptibility QTL 2 IDA RGD PMID:10360666 RGD:619600 NCBI chr 7:80,221,299...109,401,111 JBrowse link
Q Tls3 T-lymphoma susceptibility QTL 3 IDA RGD PMID:10360666 RGD:619600 NCBI chr10:51,774,612...95,600,334 JBrowse link
thymus mass term browser
Symbol Object Name Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
Q Esta1 Estrogen-induced thymic atrophy QTL 1 IDA RGD PMID:16688534 RGD:1579780 NCBI chr10:21,329,805...61,345,413 JBrowse link
Q Esta2 Estrogen-induced thymic atrophy QTL 2 IDA RGD PMID:16688534 RGD:1579780 NCBI chr 2:189,599,258...226,936,289 JBrowse link
Q Esta3 Estrogen-induced thymic atrophy QTL 3 IDA RGD PMID:16688534 RGD:1579780 NCBI chr 2:136,916,935...189,599,348 JBrowse link
Q Esta4 Estrogen-induced thymic atrophy QTL 4 IDA RGD PMID:18420736 RGD:2292503 NCBI chr 3:47,233,211...147,415,807 JBrowse link
Q Stresp18 Stress response QTL 18 IDA RGD PMID:16151695 RGD:1549862 NCBI chr 5:27,955,440...72,955,440 JBrowse link
Q Stresp21 Stress response QTL 21 IDA RGD PMID:16151695 RGD:1549862 NCBI chr10:6,375,746...51,375,746 JBrowse link
Q Stresp22 Stress response QTL 22 IDA RGD PMID:16151695 RGD:1549862 NCBI chr16:35,288,870...80,288,870 JBrowse link
Q Thym1 Thymus enlargement QTL 1 IDA RGD PMID:10792781 RGD:70859 NCBI chr 1:136,829,932...181,829,932 JBrowse link
Q Thym2 Thymus enlargement QTL 2 IDA RGD PMID:8672128 RGD:634747 NCBI chr13:46,197,976...84,753,113 JBrowse link
Q Thym3 Thymus enlargement QTL 3 IDA RGD PMID:10792781 RGD:70859 NCBI chr 1:136,829,932...181,829,932 JBrowse link
Q Thym4 Thymus enlargement QTL 4 IDA RGD PMID:10792781 RGD:70859 NCBI chr 1:197,814,409...242,814,409 JBrowse link
Q Tsu1 Thymus enlargement suppressive QTL 1 IDA RGD PMID:9234381 RGD:634729 NCBI chr 3:50,437,504...115,638,231 JBrowse link

Term paths to the root
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Term Annotations click to browse term
  vertebrate trait 2888
    organ system trait 1978
      immune system trait 49
        immune system morphology trait 42
          immune system organ morphology trait 25
            bronchus-associated lymphoid tissue morphology trait 0
            gut-associated lymphoid tissue morphology trait + 0
            immune system organ size trait + 20
            lymph node morphology trait + 0
            mucosa-associated lymphoid tissue morphology trait + 0
            spleen morphology trait + 0
            thymus morphology trait + 25
paths to the root