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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 forebrain size
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Accession:MP:0012138 term browser browse the term
Definition:size reduction or truncation of the anterior of the three primary divisions of the developing chordate brain or the corresponding part of the adult brain (in vertebrates, includes especially the cerebral hemispheres, the thalamus, and the hypothalamus and especially in higher vertebrates is the main control center for sensory and associative information processing, visceral functions, and voluntary motor functions)
Synonyms:exact_synonym: decreased prosencephalon size;   reduced forebrain size;   reduced prosencephalon size;   small forebrain;   small prosencephalon;   truncated forebrain;   truncated prosencephalon

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decreased forebrain size term browser
Symbol Object Name Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Cit citron rho-interacting serine/threonine kinase IAGP RGD PMID:11932363 RGD:13204832 NCBI chr12:40,603,073...40,764,846
Ensembl chr12:40,605,563...40,763,860
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G CitfhJjlo citron rho-interacting serine/threonine kinase; flat head mutant, Jjlo IAGP RGD PMID:11932363 RGD:13204832

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  mammalian phenotype 5402
    nervous system phenotype 368
      abnormal nervous system morphology 215
        abnormal brain morphology 139
          abnormal brain size 33
            decreased brain size 17
              decreased forebrain size 3
                decreased forebrain volume 0
                forebrain hypoplasia 0
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