Louis J Picker1
& David I Watkins21
Louis J. Picker is with the Vaccine and Gene Therapy Institute and Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon 97006, USA.
2
David I. Watkins is with the Wisconsin National Primate Research Center and Department of Pathology and Laboratory Medicine, University of Wisconsin, Madison, Wisconsin 53706, USA. watkins@primate.wisc.edu