transgene MGI:2652064 RRR109-111EDE|Tg(Pr2x1-Hand2)5Eno O RRR109-111EDE http://identifiers.org/mgd/MGI:2652064 Transgene transgene insertion 5, Eric N Olson Tg(Prrx1-Hand2)5Eno Tg(Pr2x1-Hand2)5Eno