Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Mcp-PCR2NC_0043547227MCM3    PCR2    dMCM3    CG4206    DmMCM3   
Mcp-PCR2NM_0784937227MCM3    PCR2    dMCM3    CG4206    DmMCM3   

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

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Text2Knowledge ... Yong Huang 2002