targeted mutation 1a, Helmholtz Zentrum Muenchen GmbH HEPD0507_8_F02 MGI:4435658 HEPD0507_8_H03 http://identifiers.org/mgd/MGI:4435658 EUCOMM-projects HEPD0507_8_H01 Rims4<tm1a(EUCOMM)Hmgu> HEPD0507_8_D01 HEPD0507_8_C01