Characterization of the opossum immune genome provides insights into the evolution of the mammalian immune system - Belov, Katherine; Sanderson, Claire E.; Deakin, Janine E.; Wong, Emily S.W.; Assange, Daniel; McColl, Kaighin A.; Gout, Alex; de Bono, Bernard; Barrow, Alexander D.; Speed, Terence P.; Trowsdale, John; Papenfuss, Anthony T. (Genome Research, 2007)