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Appl Environ Microbiol. 1965 January; 13(1): 99-102
Copyright © 1965 American Society for Microbiology. All Rights Reserved.
U.S. Army Biological Laboratories, Fort Detrick, Frederick, Maryland
ABSTRACT
This paper describes a simple method for purifying Coxiella burnetii cultivated in the chick embryo. The procedure is based upon the preliminary clarification of infected whole-egg suspensions by precipitating the low-density lipoproteins and other extraneous solids with dextran sulfate, calcium chloride, and sodium chloride solutions, and then concentrating the rickettsiae by centrifugation.
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