hAPP+ APPInd PDAPP PD-APP transgenic transgene http://identifiers.org/mgd/MGI:2152038 PDGF-hAPP(V717F) hbeta-APP O transgene insertion 109, Ivan Lieberburg Tg(APPV717F)109Ili Transgene PDAPP|PDAPP-109|PDGF-hAPP(V717F)|PDAPP+|APP<V717F>|APPInd|hAPP+|hbeta-APP|PD-APP transgenic PDAPP+ MGI:2152038 APP<V717F> PDAPP-109