Transgene http://identifiers.org/mgd/MGI:3513809 MMTV-erbB2 MGI:3513809 transgene insertion NK1, William Muller transgene Tg(MMTV-Erbb2)1Led O TG.NK Tg(MMTV-Erbb2)NK1Mul MMTV c-neu Tg(MMTV-Erbb2)1Led|TG.NK|MMTV c-neu|MMTV-erbB2