Your Query returns 11 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Serpinb5NM_00925710090Spi7    Maspin    ovalbumin    154790
Serpinb5NW_04739010116
SERPINB5BC0207139606PI5    maspin    154790
SERPINB5AY4158969606154790
SERPINB5AY4158979598
SERPINB5AY41589810090154790
SERPINB5NM_0026399606PI5    maspin    154790
Serpinb5NT_03917410090154790
Serpinb5BC00543410090Maspin    ovalbumin    154790
SERPINB5NT_0250289606154790
Serpinb5NM_05710810116Pi5    Maspin   

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

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Text2Knowledge ... Yong Huang 2002