Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MOR-1NM_01101310090mor    muOR    Oprm   
MOR-1NM_0009149606OPRM    OPRM1   
Mor-1NM_00861710090MDH    Mor1    Mdh-2    Mdh2   
MOR-1U2691510090

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

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