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Fig. 8. Part of a section of a cell of Chromatium okeiiii grown at low light 

 intensity (less than 40 foot-candles) and depleted of sulfur inclusions. The cyto- 

 plasm is filled with membrane-bounded vesicles. The cytoplasm has retracted 

 from the cell wall at the pole of the cell. Several slime layers (SI) are present 

 around the cell wall (w). The figure includes also a longitudinal section of the 

 flagellar tuft (F) of this bacterium. Main fixation, 2 hours, post stammg with 

 lead hydroxide. X 100,000. 



