Your Query returns 10 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Nr1i3NM_00980310090CAR    CAR1    CAR2    MB67    mCAR    Care2    ESTM32   
Nr1i3NW_04739910116
NR1I3AY4038129606
NR1I3AY4038139598
NR1I3AY40381410090
NR1I3NM_0051229606CAR    CAR1    MB67    CAR-BETA   
Nr1i3NT_07830610090
Nr1i3BC03764510090CAR    CAR1    CAR2    MB67   
NR1I3NT_0794849606
Nr1i3NM_02294110116

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

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Text2Knowledge ... Yong Huang 2002