Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
DKK-1BC0015399606SK    DKK1   
DKK-1NM_0122429606SK    DKK1   
Dkk-1AY0490179031
DKK-1AF1773949606

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

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Text2Knowledge ... Yong Huang 2002