Contents 
391 Autoantibody Probes for Mammalian Gene Expression 
Joan A. Steitz, Ph.D. 
393 Structural Studies of Protein-Nucleic Acid Interactions 
Thomas A. Steitz, Ph.D. 
397 Pattern Formation and Neuronal Cell Recognition in the Drosophila 
Visual System 
Hermann Steller, Ph.D. 
399 Molecular Genetics of Nematode Development and Behavior 
Paul W. Sternberg, Ph.D. 
401 Why Do We Drink Coffee and Tea? 
Charles F. Stevens, M.D., Ph.D. 
403 Morphogen Gradients and the Control of Body Pattern in Drosophila 
Gary Struhl, Ph.D. 
405 Secretory Pathways in Neurons 
Thomas C. Siidhof, M.D. 
407 Transcription Factors in Cell Growth and Kidney Differentiation 
Vikas P. Sukhatme, M.D., Ph.D. 
409 Structure and Function of Voltage-Dependent Calcium Channels 
Tsutomu Tanabe, Ph.D. 
411 The Molecular Biology of Liver Regeneration 
Rebecca A. Taub, M.D. 
413 Protein- Tyrosine Phosphatases and the Control of Lymphocyte 
Activation 
Matthew L. Thomas, Ph.D. 
415 Molecular Regulation of Lymphoid Cell Growth and Development 
Craig B. Thompson, M.D. 
41 7 The Molecular Basis of Metamorphosis 
Carl S. Thummel, Ph.D. 
419 The Regulation of Mammalian Development 
Shirley M. Tilghman, Ph.D. 
421 Mechanisms of Gene Regulation in Animal Cells 
Robert Tjian, Ph.D. 
423 Studies on T Lymphocytes and Mammalian Memory 
Susumu Tonegawa, Ph.D. 
427 Molecular Engineering Applied to Cell Biology and Neurobiology 
Roger Y. Tsien, Ph.D. 
xiv 
