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Neutralization kinetics studies with type SAT 2 foot-and-mouth disease virus strains. 1. Factors that influence the rate and pattern of neutralization

Published online by Cambridge University Press:  15 May 2009

M. M. Rweyemamu
Affiliation:
The Wellcome Foundation Ltd, Wellcome Foot-and-Mouth Disease Vaccine Laboratory, Pirbright, Woking, Surrey, U.K.
J. C. Booth
Affiliation:
The Wellcome Foundation Ltd, Wellcome Foot-and-Mouth Disease Vaccine Laboratory, Pirbright, Woking, Surrey, U.K.
T. W. F. Pay
Affiliation:
The Wellcome Foundation Ltd, Wellcome Foot-and-Mouth Disease Vaccine Laboratory, Pirbright, Woking, Surrey, U.K.
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A study of the kinetics of inactivation of foot-and-mouth disease virus type SAT 2 strains revealed that in most cases the rate of neutralization was not rectilinear. Deviations from first-order kinetics observed represented biphasic or parabolic and stepwise reactions. The initial rate was rapid and showed no lag phase or shoulder. The effects of deviations from linearity could be minimized by dilution of antiserum to a suitable extent. Treatment of virus–antibody mixtures with anti-species globulin resulted in enhancement of the rate of neutralization of homologous and heterologous reactions without significantly altering the relation between the two. This treatment also considerably reduced the amount of the persistent fraction. In attempt to disaggregate virus it was observed that sodium dodecyl sulphate inhibited neutralization of virus by specific antiserum.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1977

References

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