Search results for "Intracellular organelle"
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Anhydrobiosis and Dehydration of Yeasts
2017
Anhydrobiosis is a unique phenomenon of nature which gives possibility to various live organisms to survive during very hot and dry seasons of the year. It is the state in which all processes of metabolism are temporarily reversibly suspended as the result of strong dehydration of the cells. The state of anhydrobiosis is used for industrial production of active dry yeasts. Results of detailed studies of mechanisms of anhydrobiosis and of changes in the cells which take place during their drying by different methods help to improve the dehydration resistance of yeast strains necessary in traditional and nonconventional biotechnologies. The progress which has been made in these researches wit…
Electron microscopy of a double helical tubular filament in keyhole limpet (Megathura crenulata) hemolymph.
1992
A approximately 25 nm hollow double helical filament has been detected ultrastructurally in the cell-free supernatant from hemolymph of the keyhole limpet Megathura crenulata (Gastropoda: Prosobranchia: Fissurellidae). Subsequently, much higher concentrations of this material were found in the cell pellet from hemolymph. Both negative staining and thin sectioning have been performed in an attempt to obtain a preliminary structural characterization of this new filament. It is proposed that the filaments are released or secreted from blood hemocytes in response to bleeding, but it has not been possible to define absolutely an intracellular organelle containing this material. It is shown that …