Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
LXRbetaNM_00947310090UR    Unr    LXRB    NER1    OR-1    Unr2    RIP15    Nr1h2   
LXRbetaBC06602510090UR    LXRB    NER1    OR-1    RIP15    Nr1h2   

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

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Text2Knowledge ... Yong Huang 2002