[1] Inst Genom Res TIGR, Rockville, MD 20850 USA
[2] Int Livestock Res Inst, Nairobi, Kenya
[3] Wellcome Trust Sanger Inst, Cambridge CB10 1SA, England
[4] Natl Inst Med Res, London NW7 1AA, England
[5] Inst Pasteur, F-75724 Paris, France
[6] Univ London Imperial Coll Sci Technol & Med, Dept Biol Sci, London SW7 2AZ, England
[7] Venter Inst, Rockville, MD 20850 USA