Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
RHO12BC0009469606ARH12    RHOH12    RHOA    ARHA   
RHO12BC0059769606ARH12    RHOH12    RHOA    ARHA   
RHO12BC0013609606ARH12    RHOH12    RHOA    ARHA   
RHO12NM_0016649606ARHA    ARH12    RHOH12    RHOA   

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

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Text2Knowledge ... Yong Huang 2002