Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Pop7NM_02875310090Rpp20    0610037N12Rik    606113
POP7NM_0058379606RPP2    RPP20    606113
POP7BC0014309606RPP20    RPP2    606113
Pop7BC01078010090606113
POP7NC_0011344932RPP2   

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

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Text2Knowledge ... Yong Huang 2002