Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Dreg5NM_0578257227Dreg    reg-5    CG2928    DREG-5   
Dreg5NT_0337787227Dreg    reg-5    CG2928    DREG-5   

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

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Text2Knowledge ... Yong Huang 2002