transgene insertion 1, James West transgene O TetO7-BMPRII<delx4+> Transgene MGI:3703792 http://identifiers.org/mgd/MGI:3703792 TetO7-BMPRII<delx4+>|tetO7-BMPRII<delx+> tetO7-BMPRII<delx+> Tg(tetO-BMPR2*T504)1Jwst