SINCE THE EARLY DAYS OF MICROBIOLOGY IT HAS BEEN KNOWN THAT, during their life cycles, microorganisms exhibit developmental changes in common with other organisms. In the last decade interest in this aspect of microbiology has developed greatly, and research findings have provided an understanding of the genetic, molecular and biochemical bases of development. An important stimulus in this research has been the realis ation that microbial development, in its various forms, provides interest ing model systems that have relevance to a much wider understanding of the developmental processes in higher eukaryotes. Many undergraduate and other courses in microbiology reflect these developments. Up to now, the only source material for these courses has been symposia publications, or books of a more specialised nature and at an advanced level. The aim in writing this book, which is based on a series of undergraduate lectures given at the University of Nottingham, was to bring together the relevant aspects of the biology of microorganisms, in particular the bacteria and fungi. The algae and protozoa have been excluded, partly because of the limits of space and partly because they are very different from the bacteria and fungi in most aspects of their biology.

An ever-growing roster of model organisms is a hallmark of 21st century Developmental Biology. Emerging model organisms are well suited to asking some fascinating and important questions that cannot be addressed using established model systems. And new methods are increasingly facilitating the adoption of new research organisms in laboratories. This volume is written by some of the scientists who have played pivotal roles in developing new models or in significantly advancing tools in emerging systems. - Presents some of the most interesting additions to the core set of model organisms - Contains contributions from people who have developed new model systems or advanced tools - Includes personal stories about how and why model systems were developed

"A concise account of what we know about development discusses the first vital steps of growth and explores one of the liveliest areas of scientific research."--P. [2] of cover.

The Biology of Senescence

Books on both chicken immunology and developmental biology are rare. This one, however, summarizes all aspects of both areas and therefore represents a valuable compendium for experienced researchers as well as for all newcomers to the field. Following a lengthy discussion of the origin of hemopoietic cells, regulatory elements for the differentiation of these cells and B and T cell lymphopoiesis, the book goes on to describe the generation of transgenic chickens as well as an additional basic feature in embryogenesis: the positioning of organ anlage, e.g. the limb bud. To round off, a valuable compilation of monoclonal antibodies further enhances the practical usefulness of this important book.

This 1985 book describes research on the ecological, structural, physiological, genetic and molecular factors that control morphogenesis in the higher fungi. Both pure and applied studies of the biology of basidiomycetes are included in this volume, which provides a detailed synthesis of the area, by authors of the highest calibre.

1. INTRODUTION, 2. HISTORICAL REVIEW AND THEORIES OF DEVELOPMENTAL BIOLOGY, 3. GAMETOGENESIS, 4. ORGANIZATION OF EGG—POLARITY, SYMMETRY AND GRADIENTS, 5. OVULATION AND EGG TRANSPORT, 6. FERTILIZATION, 7. EGG CORTEX AND DEVELOPMENT—CORTICAL REACTIONS AND THEORIES OF FERTILIZATION, 8. PARTHENOGENESIS—VIRGIN BIRTH, 9. CLEAVAGE, 10. FATE MAPS AND CELL LINEAGE—PRESUMPTIVE AREAS AND THEIR SIGNIFICANCE, 11. MORPHOGENETIC MOVEMENTS AND GASTRULATION, 12. CELL DIFFERENTIATION, 13. GERM LAYERS AND ORGANOGENESIS, 14. INDUCTION (ORGANIZER CONCEPT), 15. FOETAL MEMBRANES OR EXTRA-EMBRYONIC MEMBRANES IN AMNIOTES (CHICK AND PIG), 16. IMPLANTATION AND PLACENTATION IN MAMMALS (EUTHERIAN MAMMALS), 17. TERATOLOGY, 18. PRENATAL DIAGNOSIS OF ABNORMALITIES, 19. METAMORPHOSIS, 20. REGENERATION, 21. REPRODUTIVE AND DEVELOPMENTAL PATTERNS IN INVERTEBRATES, 22. INVERTEBRATE LARVAE AND THEIR SIGNIFICANCE.