Speakers, Chairmen, and DiscussantsPrefaceThe Ninth Feodor Lynen Lecture: In Further Defense of DNA The Adipose Conversion of 3T3 Cells Discussion: T. Borun, W. J. Rutter, R. E. Miller, C. West, S. Weinhouse, H. V. Rickenberg, and P. FeigelsonRegulation of the Conversion of 3T3-Fibroblasts into Adipose Cells Discussion: H. V. Rickenberg, J. M. Cardenas, H. Green, R. A. Hickie, C. West, D. Gershon, M. M. Rasenick, and R. E. MillerThe Use of Transformed Fibroblastic Cells as a Model for Differentiation Discussion: H. Busch, H. Green, P. Feigelson, E. Adelberg, and E. SilversteinViral Transformation of Pancreatic Beta Cells in Culture Discussion: R. Hay, C. West, W. J. Rutter, and P. CohenPancreas Specific Genes and Their Expression during Differentiation Discussion: R. Oshima, J. Morrissey, S. Seaver, E. E. Atikkan, and S. Counce-NiddasMarrow Colony Stimulating Factor from Human Lung Discussion: S. R. Dienstman, K. Latham, and W. VerdeckisThe Organization and Expression of the Natural Ovalbumin Gene Discussion: J. D. Gurdon, B. L. Malchy, R. G. Kallen, S. P. Craig, and K. S. McCartyRegulation of Gene Expression in Normal and Neoplastic Cells Discussion: H. Lodish, K. McCarty, T. Borun, E. Atikkan, A. Zweidler, H. Smith, A. Kootstra, and H. BuschThe Role of Cyclic Nucleotides in Development Discussion: P. FeigelsonTranscriptional and Translational Control of Protein Synthesis during Differentiation of Dictyostelium discoideum Discussion: R. Kallen, T. Maden, W. Cieplinski, and D. GershonHierarchical Controls of Nucleolar Synthetic Functions Discussion: W. Cieplinski, T. Borun, J. D. Watson, K. McCarty, and V. G. AllfreyTransmembrane Control and Cell Surface Recognition Discussion: A. Marks, R. G. Kallen, I. B. Sabran, C. West, and I. B. FritzDNA Folding and Histone Organization in Chromatin Discussion: J. Cardenas, W. Cieplinski, B. L. Malchy, F. Haurowitz, H. S. Shapiro, A. Kootstra, and R. G. KallenRelease of 3 Micron Circles after Treatment of Nuclei with Trypsin Changes in Composition and Metabolism of Nuclear Non-Histone Proteins during Chemical Carcinogenesis. Association of Tumor-Specific DNA-Binding Proteins with DNAse I-Sensitive Regions of Chromatin and Observations on the Effects of Histone Acetylation on Chromatin Structure Discussion: K. McCarty, S. Craig, N. Ghosh, J. Poupko, P. Sarin, H. V. Rickenberg, J. Kallos, R. Patnaik, L. Hnilica, and M. UrbanThe Developmentally Regulated Multigene Families Encoding Chorion Proteins in Silkmoths Discussion: A. C. Stoolmiller and D. ZouziasTranscription at the Heat-Shock Loci of Drosophila Discussion: C. West, R. Oshima, T. Maden, K. Latham, and J. MorrisseyStructure and Function of Xenopus Ribosomal Genes Discussion: R. C. Leif, H. Smith, and J. B. GurdonAntigenic Properties of Non-Histone Proteins in Chromatin Discussion: R. A. Hickie, M. Urban, and T. MadenPhysical Aspects of the Generation of Morphogenese Fields and Tissue Forms Discussion: R. C. Leif, T. Maden, and J. D. WatsonThe Cell-to-Cell Membrane Channel in Development and Growth The Intercellular Transfer of Molecules in Tissue Culture Cells: A Kinetic Study by Multichannel Microfluorometry Mutant Mice from Mutagenized Teratocarcinoma Cells Discussion: R. Oshima, R. C. Leif, R. G. Kallen, L B. Fritz, C. West, H. V. Rickenberg, S. Weinhouse, W. Cieplinski, and W. T. McAllisterNuclear Transplantation and Gene Injection in the Analysis of Amphibian Development Discussion: C. C. Liew, I. C. Lo, and S.