The transgenic construct contains 3.7kb sequence of the rat Scgb1a1 (secretoglobin, family 1A, member 1 (uteroglobin) gene promoter, the reverse tetracycline regulatable transactivator protein (rtTA) gene, and 2.0kb sequence of the human grouth hormone gene, containing introns and polyadenylation site. Line 2 was generated. (J:179352)