Your Query returns 14 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
psmb6NM_1311527955
Psmb6NW_04733410116
Psmb6NM_05709910116
PSMB6BC0008359606LMPY    MGC5169    DELTA   
PSMB6AY4157379606
PSMB6AY4157389598
PSMB6AY41573910090
PSMB6NM_0027989606LMPY    DELTA    MGC5169   
Psmb6NT_03951510090
Psmb6BC05845110116
Psmb6BC01389710090
PSMB6G676699913
PSMB6NT_0107189606
Psmb6NM_00894610090Mpnd    Lmp19   

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

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Text2Knowledge ... Yong Huang 2002