Contents 
1 71 Mechanisms of Immunological Self-Tolerance and Autoimmunity 
Christopher C. Goodnow, B.V.Sc, Ph.D. 
1 73 Developmental Control of Gene Expression 
Rudolf Grosschedl, Ph.D. 
175 Polypeptide Hormone Gene Regulation 
Joel F. Habener, M.D. 
1 77 Structural Studies of Macromolecular Assemblies 
Stephen C. Harrison, Ph.D. 
1 79 Control of Gene Expression During the Cell Cycle and Development 
of the Mammalian Cerebellum 
Nathaniel Heintz, Ph.D. 
181 Structural Biology of CD4 and CDS Involvement in the Cellular 
Immune Response 
Wayne A. Hendrickson, Ph.D. 
183 Variegated Position Effects in Drosophila 
Steven Henikoff, Ph.D. 
185 Biological Roles and Expression of Complement Receptors 
V. Michael Holers, M.D. 
187 Genetic Control of Nematode Development 
H. Robert Horvitz, Ph.D. 
189 Protein Folding in Vivo 
Arthur L. Horwich, M.D. 
191 Molecular Mechanisms in the Regulation of Synaptic Transmission 
Richard L. Huganir, Ph.D. 
193 Molecular Aspects of Signal Transduction in the Visual System 
James B. Hurley, Ph.D. 
195 The Molecular Basis of Cell Adhesion in Normal and 
Pathological Situations 
Richard O. Hynes, Ph.D. 
197 Molecular Genetics of Intracellular Microorganisms 
Ralph R. Isberg, Ph.D. 
201 Genetic Approaches to the Control of Mycobacterial Diseases 
William R. Jacobs, Jr., Ph.D. 
203 Mechanisms of Neurotransmitter Storage and Release 
Reinhard Jahn, Ph.D. 
205 Molecular Studies of Voltage-Sensitive Potassium Channels 
Lily Y.Jan, Ph.D. 
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