Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
serpin 4NM_1654957227Sp4    CG9453    neuroserpin    Spn4   
serpin 4NM_1654967227Sp4    CG9453    neuroserpin    Spn4   

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

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Text2Knowledge ... Yong Huang 2002