Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CPOXBC0235519606CPX    CPO    HCP   
CPOXBC0172109606CPX    CPO    HCP   
CPOXBC0235549606CPX    CPO    HCP   
CPOXNM_0000979606CPO    CPX    HCP   
CpoxNM_00775710090CPX    Cpo    HCP   
CPOXNT_0056129606

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

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Text2Knowledge ... Yong Huang 2002