Titlebook: Biochemical Differentiation in Insect Glands; Wolfgang Beermann Book 1977 Springer-Verlag Berlin Heidelberg 1977 Biochemie.Drüsenzelle.Ins

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Biochemical Differentiation in Insect Glands978-3-540-37332-2Series ISSN 0080-1844 Series E-ISSN 1861-0412

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Book 1977well 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 o

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Journalismus und Public Relations strongly support this hypothesis. The puffed regions of giant chromosomes are sites of RNA synthesis (Pelling, 1959; Sirlin, 1960), the rate of synthetic activity being roughly proportional to the state of expansion of the individual puff (Pelling, 1964; Edström and Daneholt, 1967; Daneholt et al., 1969).

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The Salivary Gland of , (Diptera): A Model System for the Study of Cell Differentiation,roscope. A gland comprises two or more related cell types that exhibit minor differences in terms of cell morphology, chromomere activity and protein synthesis and thus provide excellent tools for comChapautive studies of differentiated states in the same tissue.

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Balbiani Ring Pattern and Biochemical Activities in the Salivary Gland of , (Chironomidae), strongly support this hypothesis. The puffed regions of giant chromosomes are sites of RNA synthesis (Pelling, 1959; Sirlin, 1960), the rate of synthetic activity being roughly proportional to the state of expansion of the individual puff (Pelling, 1964; Edström and Daneholt, 1967; Daneholt et al., 1969).

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0080-1844 ation, 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