Your Query returns 11 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Serpinb7NM_02754810090megsin    ovalbumin    4631416M05Rik   
Serpinb7NW_04739010116
Serpinb7NT_07969510116
Serpinb7NM_13040410116Megsin   
SERPINB7AY4012239606
SERPINB7AY4012249598
SERPINB7AY40122510090
SERPINB7NM_0037849606MEGSIN   
Serpinb7NT_03917410090
Serpinb7BC06400410090megsin    ovalbumin   
SERPINB7NT_0250289606

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

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Text2Knowledge ... Yong Huang 2002