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Appl Environ Microbiol. 1970 September; 20(3): 369-370
Copyright © 1970 American Society for Microbiology. All Rights Reserved.

Evaluation of Liquid Nitrogen Storage for Preservation of Group A Streptococcal M Protein-Sensitized Sheep Red Blood Cells

James H. Mathews and Robert A. Zimmerman

Streptococcal Disease Section, Ecological Investigations Program, National Communicable Disease Center, Fort Collins, Colorado 80521

ABSTRACT

Streptococcal M protein-sensitized sheep red blood cells stored in liquid nitrogen showed insignificant change in titer when tested against homologous antisera over a 6-month period. This method eliminates much of the preparation time required for the passive hemagglutination procedure and increases the reproducibility of the test.

Appl Environ Microbiol. 1970 September; 20(3): 369-370
Copyright © 1970 American Society for Microbiology. All Rights Reserved.





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Copyright © 1970 by the American Society for Microbiology. All rights reserved.