transgene O Tg(Fos-lacZ)34Efu TOPGAL Top-Gal MGI:3057159 Tg(TCF/Lef1-lacZ)34Efu Tg(Fos-lacZ)34Efu|TOPGAL|Top-Gal|TCF-betagal Transgene TCF-betagal transgene insertion 34, Elaine Fuchs http://identifiers.org/mgd/MGI:3057159