Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CG11979AE0038287227Rpb5   
CG11979NM_1367867227RPB5   
CG11979NT_0337787227RPB5   

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

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Text2Knowledge ... Yong Huang 2002