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Minute tubular forms in soilLarge numbers of long, straight, flattened structures were observed during an electron-microscope study of bacteriophage in aqueous extracts. These structures were called tubules and ranged in width from 10 to 50 nm. Materials and methods were discussed relative to extraction of tubules from soil, electron microscopy, quantitation of tubules in filtrate suspension, tests performed on tubules, plaque formation, and nutrient amendments. It is found that all of the tubules recovered from soil are broken at one or both ends. They are present in surface soils but not in a subsurface sample. Their numbers decrease during bacterial multiplication in soil or broth-containing soil. The tubules appear to be composed of protein that could be disintegrated to liberate nonprotein fibers. A possible clue to the nature of the tubules is their apparent relation to soil bacteria.
Document ID
19790067685
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Casida, L. E., Jr.
(Pennsylvania State Univ. University Park, PA, United States)
Liu, K.-C.
(Pennsylvania State University University Park, Pa., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1979
Publication Information
Publication: Canadian Journal of Microbiology
Volume: 25
Issue: 6, 19
Subject Category
Life Sciences (General)
Accession Number
79A51698
Funding Number(s)
CONTRACT_GRANT: NGR-39-009-180
Distribution Limits
Public
Copyright
Other

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