Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
INK4a-ARFNM_00987710090Arf    p16    MTS1    p19ARF    p16INK4a    ARF-INK4a    Cdkn2a   
Ink4a-ArfAF47497410116Cdkn2a   
Ink4a-ArfAF47497510116Cdkn2a   

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

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Text2Knowledge ... Yong Huang 2002