Affiliation: | School of Veterinary Science, The University of Melbourne, Parkville, Vic. 3010, Australia. Tel: +61 3 8344 7367 Fax: +61 3 8344 7374; School of Anatomy and Human Biology, The University of Western Australia, Perth, Western Australia; CSIRO Livestock Industries, Queensland Bioscience Precinct, 306 Carmody Rd, St. Lucia, Australia; Department of Primary Industries Victoria, Werribee, Victoria, Australia; ADVS Department, University of Utah, Logan, UT, 84322 U.S.A. |