Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
six3.2BC0594257955SIX3    cb347    six3b   
six3.2NM_1313637955SIX3    six6    cb347    six3b   
Six3.2AF2769928355

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

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Text2Knowledge ... Yong Huang 2002