Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
RPSM12BC0074999606RPMS12    MT-RPS12    MPR-S12    RPS12    MRPS12    603021
RPSM12BC0016179606RPMS12    MT-RPS12    MPR-S12    RPS12    MRPS12    603021
RPSM12NM_0211079606RPS12    RPMS12    MPR-S12    MT-RPS12    MRPS12    603021
RPSM12NM_0333639606RPS12    RPMS12    MPR-S12    MT-RPS12    MRPS12    603021
RPSM12NM_0333629606RPS12    RPMS12    MPR-S12    MT-RPS12    MRPS12    603021
RPSM12BC0064249606RPMS12    MT-RPS12    MPR-S12    RPS12    MRPS12    603021

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

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Text2Knowledge ... Yong Huang 2002