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Appl Environ Microbiol. 1971 May; 21(5): 860-861
Copyright © 1971 American Society for Microbiology. All Rights Reserved.
Department of Research, The National Drug Company, Division of Richardson-Merrell Inc., Swiftwater, Pennsylvania 18370
ABSTRACT
Normal and immune sera were obtained from horses immunized with either aqueous, alum, or adjuvant bivalent vaccines containing Milford equine 2 virus. Upon heating at 56 C for 30 min, a factor, required for hemagglutination-inhibition but not complement fixation or neutralization testing, was destroyed. This factor which is present in normal sera does not appear to be complement.
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