http://identifiers.org/mgd/MGI:4880283 N01578P1_C_73W_D1 Chek1<tm1(NCOM)Mfgc> NorCOMM-projects MGI:4880283 N01578P1_C_73W_D5 N01578P1_C_73W_E3 targeted mutation 1, Mammalian Functional Genomics Centre