Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Atp8a1NM_00972710090Ia    APLT    Atp3a2    B230107D19Rik   
ATP8A1AY4058259606
ATP8A1AY4058269598
ATP8A1AY40582710090
ATP8A1NM_0060959606ATPIA    ATPP2    ATPASEII   
ATP8A1NM_1748389913
Atp8a1NT_07845710090
ATP8A1NT_0062389606

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

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Text2Knowledge ... Yong Huang 2002