Abstract
Summary
Lysine polypeptides cause marked inhibition of the multiplication of mumps virus in the allantoic sac of the chick embryo. Inhibition was obtained with as little as 1 μg of polypeptide. Polylysine was effective when injected as late as 36 hours after inoculation of virus. The polypeptide caused inhibition of viral multiplication in the allantoic sac when injected either in the allantoic sac or the yolk sac. Possible mechanisms of inhibition of viral multiplication are discussed.
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