1 Chromosomal Abnormalities in Leukemia and Lymphoma: Clinical and Biological Significance.- Methods.- Chronic Myelogenous Leukemia (CML).- Chronic Phase of CML.- Acute Phase of CML.- The Ph1 Chromosome As a Biological Marker.- Acute Nonlymphocytic Leukemia (ANLL) de Novo.- Chromosome Gain and Loss.- Structural Rearrangements.- Acute Nonlymphocytic Leukemia Induced by Treatment.- Acute Lymphocytic Leukemia (ALL).- The 8;14 Translocation.- 14q+.- The 4;11 Translocation.- Near-Haploid ALL.- Hyperdiploidy with 5060 Chromosomes.- The Ph1 Chromosome in ALL.- Malignant Lymphoma (ML).- Burkitt Lymphoma.- Other Non-Hodgkin Lymphoma.- The Biological Significance of Consistent Chromosomal Abnormalities.- When Do Chromosomal Rearrangements Occur?.- Defining the Critical Recombinant Chromosome.- Chromosomal Localization of Cellular Oncogenes.- Specificity of Chromosomal Rearrangements.- References.- 2 An Algorithm for Comparing Two-Dimensional Electrophoretic Gels, with Particular Reference to the Study of Mutation.- The Theory and Practice of Two-Dimensional Gels, with Particular Reference to the Study of Mutation.- The General Problem of Image Comparison.- Thresholding Spot Intensity.- Adjusting for Positional Variations.- A Set of Algorithms for Detecting Potential Mutational Events.- Estimating the Locations of Protein Spots.- Defining Spot Neighborhoods.- Finding a Subset of Matching Spots.- Iteration of Matching Step.- Recovery from Mismatches.- What the Algorithm Does Not Do.- Validation of the Current Algorithm.- Algorithm Performance on Artificially Constructed Gels.- Algorithm Performance on Real Gels.- Algorithm Performance on Simulated Mutations.- Improving the System: Necessary Developments in the Algorithm.- A More Rigorous Treatment of the Noise Function.- Improving the Accuracy of the Algorithm.- Increasing the Speed of Execution.- of a Priori Knowledge.- Improving the System: Necessary Developments in Two-Dimensional Gels.- Experimental Validation of This Apprlc<