Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
DEFA1BC0279179606DEF1    HNP-1    MRS    HP-1    125220
DEFA1NM_0040849606MRS    DEF1    HP-1    HNP-1    125220
DEFA1NT_0237369606125220

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

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Text2Knowledge ... Yong Huang 2002