EUCOMM-projects HEPD0855_1_A04 http://identifiers.org/mgd/MGI:5472591 MGI:5472591 HEPD0874_1_A02 HEPD0874_1_C01 HEPD0855_1_E04 Vsig8<tm1a(EUCOMM)Hmgu> targeted mutation 1a, Helmholtz Zentrum Muenchen GmbH