Transgene G37R(42) MGI:3573957 Tg(SOD1*G37R)42Dpr G37R SOD1 line 42|SOD1 G37R line 42|G37R(42)|Tg(SOD1-G37R)42Dpr Tg(SOD1-G37R)42Dpr O http://identifiers.org/mgd/MGI:3573957 transgene insertion 42, Donald L Price SOD1 G37R line 42 G37R SOD1 line 42 transgene