This volume contains the proceedings of an International Sympo- sium on the Biology and Pharmacology of Tumor Cell Differentiation- held on June 29-July I, 1986 at the University of Tromso, Norway. The objective of this meeting was to bring together scientists from various disciplines to discuss recent advances in the understanding of tumor cell differentiation and to bridge the gap between experimental findings and clinical application of new knowledge. Thus the infor- mation will be of value not only to basic scientists involved in mol- ecular and cell biology, but also to pharmacologists and clinicians trying to develop the concept of tumor cell differentiation as a thera- peutic modality. Each plenary speaker and selected poster presenters were requested to submit a comprehensive, up-to-date review of recent contributions to their disciplines related to differentiation and: hematopoietic factors and leukemic cells in culture~ vitamin deriva- tives and polyamines; nucleosides and methylation; and cell interac- tions.

Nonlinearities and optics, optoelectronics and fiber communications are discussed systematically in this book. In a unified theoretical treatment, the book addresses the three categories of materials: fibers, semiconductors, and nonlinear crystals. In each case emphasis is placed on the nonlinear character of their refractive indices and optical absorption. The text also gives an in-depth analysis of the uses and limitations of phontonic nonlinearities with regard to wavelength division multiplexing and high-speed fiber communications. It will be of interest to graduate students as well as researchers and engineers in the fields of nonlinear optics and optical communications.

Nonlinearities and optics, optoelectronics and fiber communications are discussed systematically in this book. In a unified theoretical treatment, the book addresses the three categories of materials: fibers, semiconductors, and nonlinear crystals. In each case emphasis is placed on the nonlinear character of their refractive indices and optical absorption. The text also gives an in-depth analysis of the uses and limitations of phontonic nonlinearities with regard to wavelength division multiplexing and high-speed fiber communications. It will be of interest to graduate students as well as researchers and engineers in the fields of nonlinear optics and optical communications.

This volume contains the proceedings of an International Sympo- sium on the Biology and Pharmacology of Tumor Cell Differentiation- held on June 29-July I, 1986 at the University of Tromso, Norway. The objective of this meeting was to bring together scientists from various disciplines to discuss recent advances in the understanding of tumor cell differentiation and to bridge the gap between experimental findings and clinical application of new knowledge. Thus the infor- mation will be of value not only to basic scientists involved in mol- ecular and cell biology, but also to pharmacologists and clinicians trying to develop the concept of tumor cell differentiation as a thera- peutic modality. Each plenary speaker and selected poster presenters were requested to submit a comprehensive, up-to-date review of recent contributions to their disciplines related to differentiation and: hematopoietic factors and leukemic cells in culture~ vitamin deriva- tives and polyamines; nucleosides and methylation; and cell interac- tions.