Your Query returns 14 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
NptxrNM_02876310090NPR    Cbx6    Npcd    D15Bwg0580e    1200009K17Rik    1700036C17Rik    5730406O18Rik   
NptxrNM_03068910090NPR    Cbx6    Npcd    D15Bwg0580e    1200009K17Rik    1700036C17Rik    5730406O18Rik   
NptxrNW_04778010116
NPTXRAL0085839606
NPTXRAY4209819606
NPTXRAY4209829598
NPTXRAY42098310090
NPTXRNM_0142939606NPR   
NPTXRNM_0581789606NPR   
NptxrNT_08192210090
NptxrBC05896210090NPR    1200009K17Rik    5730406O18Rik    Cbx6    D15Bwg0580e   
NptxrBC04824010090NPR    1200009K17Rik    5730406O18Rik    Cbx6    D15Bwg0580e    Npcd   
NPTXRNT_0115209606
NptxrNM_03084110116Npr   

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

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Text2Knowledge ... Yong Huang 2002