Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
or2NM_1317077955ZFOR2    oprm1   
OR2AE00868310090
or2AF1328137955
or2AJ0127097748
Or2BX88305210116

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

Google

Text2Knowledge ... Yong Huang 2002