Contents 
511 Lineage-Specific Gene Expression in Caenorhabditis elegans 
James D. McGhee, Ph.D. 
513 Cytokine Regulation of Effector Functions in Immune Responses 
Tim R. Mosmann, Ph.D. 
515 Cellular and Molecular Basis of Variability in Entamoeba histolytica 
Esther Orozco, Ph.D. 
51 7 Phosphorylation and Protein-Protein Interactions in 
Signal Transduction 
Tony Pawson, Ph.D. 
519 Chemical and Functional Characterization of Scorpion Toxins 
Lourival Domingos Possani, Ph.D. 
521 Protein Crystallography in the Study of Infectious Diseases 
Randy J. Read, Ph.D. 
523 Representations and Transformations of Tactile Signals in Somatic 
and Frontal Motor Cortices 
Ranulfo Romo, M.D., Ph.D. 
525 Anterior-Posterior Patterning in the Early Mammalian Embryo 
Janet Rossant, Ph.D. 
527 Response of the Cerebral Cortex to Spatial Information 
Jean-Pierre Roy, M.D. 
529 Molecular Studies on Neuronal Calcium Channels 
Terry P. Snutch, Ph.D. 
531 Cystic Fibrosis, Gene Expression in the Mammalian Lens, and Mapping 
of Chromosome 7 
Lap-Chee Tsui, Ph.D. 
533 Index 
xvii 
