Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
wu:fd18f05BC0639507955bact    B-ACTZF    ACTB    bactzf    fd18f05    bactin1   
wu:fd18f05NM_1310317955ACTB    bact    bactzf    B-ACTZF    fd18f05    bactin1   

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

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Text2Knowledge ... Yong Huang 2002