Author
		  
		  Dr Edward Wagner 
		  is Professor of Molecular Biology and Biochemistry at the University 
		  of California, Irvine. He is also a Fellow of the American Association 
		  for the Advancement of Science, and a member of the American Academy 
		  of Microbiology. 
		  
		  Dr Martinez Hewlett is Professor Emeritus in the Department of Molecular 
		  and Cellular Biology at the University of Arizona. He has specialized 
		  in the structure and molecular biology of the picornaviruses and the 
		  bunyaviruses. He received his graduate training in biochemistry at the 
		  University of Arizona and was a postdoctoral fellow at the Massachusetts 
		  Institute of Technology with Nobel Laureate Dr David Baltimore.