targeted mutation 1a, Helmholtz Zentrum Muenchen GmbH HEPD0633_6_B04 MGI:4455716 EUCOMM-projects http://identifiers.org/mgd/MGI:4455716 HEPD0633_6_B01 HEPD0633_6_B03 Baz1a<tm1a(EUCOMM)Hmgu>