transgene 50-4 transgene insertion 44, Ralph L Brinster MGI:2679153 HBs-tg|HBsAg|50.4|Tg(Alb1-HBV)Bri44|50-4 50.4 Transgene http://identifiers.org/mgd/MGI:2679153 Tg(Alb1-HBV)Bri44 Tg(Alb1HBV)44Bri HBs-tg O HBsAg