Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Pr-1NM_01116910090Pr-3    Prlr-rs1    Prlr   
PR-1M591963702
PR-1U8989539946
PR-1U822004577
PR-1X797783880
pr-1AF5079743750

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

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Text2Knowledge ... Yong Huang 2002