Heat-Labile Factor Necessary for Hemagglutination-Inhibition Testing of Horse Sera

AUTOR(ES)

DeMeio, Joseph L.

RESUMO

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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