Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
As1NM_00971210090As-1    As-1r    As-1s    As-1t    As1-r    As1-s    As1-t    Asr-1    Ast-1    Arsb    607277
aS1X843586282
AS1U776793847
AS1Z232675145
as1AJ1335223885
AS1Y133213888
As1AY081945172083
AS1AY2409264081
AS1X573459606607277

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

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Text2Knowledge ... Yong Huang 2002