Your Query returns 7 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Hist1NM_01354810090H3.2-221    Hist1h3f   
HIST1NM_0053259606H1.1    H1F1    HIST1H1A   
HIST1NT_0075929606H1.1    H1F1    HIST1H1A   
HIST1NG_0013359606H1.1    H1F1    HIST1H1A   
Hist1NM_0796827227ora    hclA    GluCI    CG7411    HisCl2    DmHisCl2    indefinite    ort   
Hist1NT_0337777227ora    hclA    GluCI    CG7411    HisCl2    DmHisCl2    indefinite    ort   
Hist1AF4113407227

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002