NEUTRALIZATION OF INFLUENZA A VIRUS BY HUMAN SERUM.
A linear relationship exists between the quantity of human serum used and the quantity of influenza A virus neutralized. By means of this relationship it is possible to determine the maximum quantity of virus which a given human serum can neutralize. This quantity, the neutralizing capacity, is a fixed value and, unlike the serum dilution end point, is independent of the amount of virus used in the neutralization test.
Horsfall
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Laboratories of the International Health Division of The Rockefeller Foundation, New York.
Lennette
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