Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
mMycNM_01260310116RNCMYC    Myc   
mmyCAL590464100226SCP1.233B   
mmyCAJ276673100226
mmyCNC_003903100226SCP1.233B   

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

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Text2Knowledge ... Yong Huang 2002