HEPD0943_2_G07 targeted mutation 1a, Helmholtz Zentrum Muenchen GmbH HEPD0943_2_D08 HEPD0943_2_B05 HEPD0943_2_A07 MGI:5523832 EUCOMM-projects http://identifiers.org/mgd/MGI:5523832 Sp2<tm1a(EUCOMM)Hmgu>