Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
TSBN51NM_02594510090RPC4    44kDa    BN51T    2810426M17Rik    Polr3d    187280
TSBN51BC0030399606RPC4    BN51T    POLR3D    187280
TSBN51BC0026039606RPC4    BN51T    POLR3D    187280
TSBN51BC0044849606RPC4    BN51T    POLR3D    187280
TSBN51NM_0017229606RPC4    BN51T    POLR3D    187280
TSBN51BC01610210090BN51T    RPC4    44kDa    Polr3d    187280

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

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Text2Knowledge ... Yong Huang 2002