Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
NK21L1NM_01145510090NK21    Spi13    ovalbumin    1600002F03Rik    Serpinb9f   
NK21L1BC064758100901600002F03Rik    ovalbumin    NK21    Serpinb9f   
NK21L1BC064759100901600002F03Rik    ovalbumin    NK21    Serpinb9f   

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

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Text2Knowledge ... Yong Huang 2002