Tg(GFAP-APOE_i4)22Hol http://identifiers.org/mgd/MGI:3784188 Tg(GFAP-APOE*4)22Hol Tg(GFAP-APOE*4)22Hol|GFAP-apoE4 line 22 transgene insertion 22, David M Holtzman O transgene Transgene GFAP-apoE4 line 22 MGI:3784188