D17Ertd663e + D17Ertd663e|Air|2810051F02Rik|2810434M15Rik|B930018I07Rik 2810434M15Rik O Airn genetic mapping Air http://identifiers.org/mgd/MGI:1353471 antisense lncRNA gene antisense Igf2r RNA 2810051F02Rik B930018I07Rik Gene MGI:1353471