Contents 
465 Drosophila Behavior and Neuromuscular Development 
Michael W. Young, Ph.D. 
469 Control of Transcription by Transmembrane Signals 
Edward B. Ziff, Ph.D. 
471 Cell-Cell Interactions Determine Cell Fate in the Drosophila Retina 
S. Lawrence Zipursky, Ph.D. 
4 73 Molecular Genetics of Sensory Transduction 
Charles S. Zuker, Ph.D. 
475 Investigators by Location 
481 International Research Scholars 
483 Molecular Biology and Epidemiology for Control of Rotavirus Diarrhea 
Carlos F. Arias, Ph.D. 
485 Molecular Genetics of Normal and Leukemic Hematopoiesis 
Alan Bernstein, Ph.D. 
487 Molecular Biology of Two Enteropathogenic Bacteria 
Edmundo Calva, Ph.D. 
489 Functional Heterogeneity in Prolactin- secreting Cells 
Gabriel Cota, Ph.D. 
491 Ionic Channels in Sea Urchin Sperm Physiology 
Alberto Darszon, Ph.D. 
493 Host-Pathogen Interactions in Microbial Pathogenesis 
B. Brett Finlay, Ph.D. 
45^5 Mechanisms of Transcriptional Regulation 
Jack Greenblatt, Ph.D. 
497 Ionic Homeostasis in White Blood Cells 
Sergio Grinstein, Ph.D. 
499 Genetic Basis of Multidrug Resistance 
Philippe Gros, Ph.D. 
501 Control of Bacterial Protein Synthesis During Viral Infection 
Gabriel Guarneros Pena, Ph.D. 
503 Molecular Genetics of Photosynthesis and Carbon Assimilation in Plants 
Luis R. Herrera-Estrella, Ph.D. 
507 Gene Pattern Expression in Early Embryogenesis 
Alexandra L. Joyner, Ph.D. 
509 Diagnostic Use of UNA Replication in Infectious Diseases 
Paul M. Lizardi, Ph.D. 
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