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Ultrastructure of the Obligate Halophilic Bacterium Halobacterium halobium

John Curtin School of Medical Research, The Australian National University, Canberra, Australia

ABSTRACT

The fine structure of Halobacterium halobium was studied by means of a modified double-fixation technique. The cell envelope is shown to consist of both a "wall" and a plasma membrane. Some electron-dense strands were seen inside the cytoplasm running parallel to the cell envelope. An unusual organelle (or organelles) appeared inside the cytoplasm in the form of parallel striated strands.