-3- 
The eleven signers are all actively engaged in Salmonella 
genetics. They are: 
Bruce Ames 
Department of Biochemistry 
Univ. of Cal., Berkeley 
Giovanna F. Ames 
Department of Biochemistry 
Univ. of Cal., Berkeley 
David Botstein 
Department of Biology 
Mass. Institute of Technology 
Melvin Simon 
Department of Biology 
Univ. of Cal., San Diego 
Bruce A.D. Stocker 
Department of Medical Microbiology 
Stanford University 
Graham Walker 
Department of Biology 
Mass. Institute of Technology 
John Ingraham 
Department of Microbiology 
Univ. of Cal., Davis 
Nancy Kleckner 
Dept, of Biochemistry and Molecular Biology 
Harvard University 
Daniel E. Koshland 
Department of Biochemistry 
Univ. of Cal., Berkeley 
Boris Magasanik 
Department of Biology 
Mass. Institutes of Technology 
John Roth 
Department of Biology 
University of Utah 
[Appendix A — 131] 
