Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
topoisomerase IING_0001857227TOP2    wind    CHRAC    TopII    TopoII    dCHRAC    CG10223    CT28703    Topo II    dTopoII   
topoisomerase IIZ2967610116

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

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Text2Knowledge ... Yong Huang 2002