RsaI restriction enzyme digestion products of ITS1 fragment. Lanes 1-5 denote to those of Fasciola gigantica isolated from cattle at Yaoundé, Cameron (1) and Cairo, Egypt (2, 3); as well as from sheep at Cairo, Egypt (4, 5), respectively. Lanes 6-10 denote to those of Fasciola hepatica isolated from sheep and cattle (6, 7) at Cairo, Egypt, and sheep and cattle (8, 9) at Tanta, Egypt, respectively, as well as from cattle at Limoges, France (10).