Antonie van Leeuwenhoek

, Volume 43, Issue 1, pp 19–29 | Cite as

Structural and physiological characteristics of some sheathed bacteria

  • Maria H. Deinema
  • S. Henstra
  • Eugenie von Elgg Werdmüller


The fine structure and growth of two gram-negative and two gram-positive strains of sheathed bacteria, isolated from activated sludge, have been studied. Their anatomy is quite different fromSphaerotilus natans. The cells are rectangular, tightly joined together, non-motile and enclosed by a sheath which is thin in the gram-negative strains and rather electron-dense in the two larger gram-positive strains. The four strains grow slowly and form pink filamentous flocs in liquid media.


Fine Structure Liquid Medium Physiological Characteristic Sheath Bacterium 
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Copyright information

© Kluwer Academic Publishers 1977

Authors and Affiliations

  • Maria H. Deinema
    • 1
  • S. Henstra
  • Eugenie von Elgg Werdmüller
    • 2
  1. 1.Laboratory of MicrobiologyAgricultural UniversityWageningenThe Netherlands
  2. 2.Technical and Physical Engineering Research ServiceWageningenThe Netherlands

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