Doug Antczak took up polo during his Thouron years at Cambridge, and loved playing so much he almost dropped out of school. But he dislocated a hip in a fall, and while convalescing from the “lucky break” immersed himself in immunology research. The horse — that “magnificent animal” — has been the focus of a lifetime of authoritative research; today he is an academic veterinary scientist at Cornell University, member of the Equine Research Hall of Fame and 2010 winner of the International Distinguished Veterinary Immunologist Award. He bred Twilight, the mare chosen by the U.S. National Institutes of Health as the DNA donor of the Horse Genome Sequence. His most recent project has sent him to Qatar, to study the comparative genetics of the Arabian horse, the Arabian oryx and the dromedary camel.