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Appl Environ Microbiol. 1975 April; 29(4): 565-566
Copyright © 1975 American Society for Microbiology. All Rights Reserved.
Naval Biomedical Research Laboratory, School of Public Health, University of California, Berkeley, California 94720
ABSTRACT
Heat resistance of freeze-dried Bacillus subtilis spores varied in a rhythmic manner as a function of time between acidification to about pH 1.5 and freezing. A comparable rapid shift to pH 11 produced little change in resistance to heat.
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