Autoradiographische Untersuchungen zur Proteinsynthese während der Frühentwicklung von Dermestes frischi (Coleoptera) / Autoradiographic Investigations on Protein Synthesis During Early Development of Dermestes frischi (Coleoptera)

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Abstract
Injection of tritiated phenylalanine or leucine in eggs shortly after deposition shows the importance and use of free amino acids during cleavage stages. First the activity is found homogeneously distributed in the yolk system and ooplasm. In late cleavage stages the amino acids are incorporated into the periplasm of the egg. These results lead to the conclusions, that there is a continuous transfer of material out of the yolk system into cortical regions during cleavage. Secondly the first new synthetized protein fractions are located in the cortical ooplasm.

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