p16<Ink4a> KO MGI:2384165 p16<Ink4a*> Ink4a<*> Modified isoform(s) p16<Ink4a--> p16<-> Ink4a<-> http://identifiers.org/mgd/MGI:2384165 Cdkn2a<tm1.1Brn> targeted mutation 1.1, Anton Berns