The construct contains a 5.2 kb fragment of the bovine keratin 5 (KRT5) promoter controlling the avian retroviral receptor TVA cDNA (pg800 tva). A 0.6 kb fragment of the rabbit beta-globin intron and a 3'poly A sequence are also in the construct. Expression of the transgene is restricted to the ovarian surface epithelium. (J:75724)