Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
A1ABC0119919606AAT    PI    PI1    A1AT    alpha-1-antitrypsin    SERPINA1   
A1ABC0156429606AAT    PI    PI1    A1AT    alpha-1-antitrypsin    SERPINA1   
A1ANM_0002959606PI    AAT    PI1    A1AT    SERPINA1   
A1AK022129606
A1AAF1594549606A1A-Mwhitstable   
A1aAH00584410090
A1aU2377310090
A1aU2377410090

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

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Text2Knowledge ... Yong Huang 2002