โ Scribed by Y. Suzuki (auth.), Professor Dr. Wolfgang Beermann (eds.)
No coin nor oath required. For personal study only.
The majority of studies devoted to animal development traditionally start out from questions of morphogenesis. Of course, visible differentiation, as well as the events leading to it, should ultimately become describable in molecular terms. Nevertheless, even "simple" morphogenetic processes may have a complex biochemical basis which makes it difficult to recognize the key functions involved. This difficulty obviously does not exist in the case of glands, i. e. , organs and tissues primarily concerned with, and characterized by, the nature of their products, i. e. , one, or a few secretory proteins synthesized in huge quantities. In these systems, when we observe differences between different portions of a gland, or when switches of the synthetic activity occur during development, there is no question as to what we have to look for: we are directly faced with the fact of differential protein synthesis and the problem of its control. Insect glands, in addition, share other significant properties, i. e. , the absence of cell division during growth and, concomitantly, the formation of giant cells with polyploid or polytene nuclei. This unique set of peculiarities can be fully exploited only if one compares various representative systems, everyone of which, when considered by itself, might appear too exotic to invite generalization. In the present volume, the editors have endeavored to bring together contributionscoveringselected insect glands from various points of view,including the developmental, molecular genetic and cytogenetic aspects.
Front Matter....Pages I-XII
Differentiation of the Silk Gland A Model System for the Study of Differential Gene Action....Pages 1-44
The Eggshell of Insects: Differentiation-Specific Proteins and the Control of Their Synthesis and Accumulation During Development....Pages 45-145
The Salivary Gland of Chironomus (Diptera): A Model System for the Study of Cell Differentiation....Pages 147-196
Balbiani Ring Pattern and Biochemical Activities in the Salivary Gland of Acricotopus lucidus (Chironomidae)....Pages 197-212
Back Matter....Pages 213-218
Cell Biology
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