Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
mpxAJ0062265693
mpxAF3788247955
mpxAF3788257955
mpxAF3788267955
mpxBC0562877955wu:fj80f04    fj80f04    mpo   

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

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Text2Knowledge ... Yong Huang 2002