Tg(Ckm-APPSw)A6Lfa transgene insertion A6, Frank M LaFerla http://identifiers.org/mgd/MGI:3720794 Tg(Ckm-APP*K670N*M671L)A6Lfa|A6 line O MGI:3720794 transgene Transgene Tg(Ckm-APP*K670N*M671L)A6Lfa A6 line