Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGC18752BC01129010090P21    SIIR    pp21    Tceal1   
MGC18752NM_14623610090P21    SIIR    pp21    Tceal1   

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

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Text2Knowledge ... Yong Huang 2002