O transgene int-5-aromatase MMTV-int-5-aromatase transgene int-5-aromatase|MMTV-int-5-aromatase transgene http://identifiers.org/mgd/MGI:2450860 Tg(Cyp19)C2-3Rrte transgene insertion C2-3, Rajeshwar Rao Tekmal MGI:2450860 Transgene