Influenza vaccine production in liquid cell culture

Drug – bio-affecting and body treating compositions – Lymphokine

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435235, 435236, 435237, 435238, 435239, A61K 3912, C12N 700, C12N 702, C12N 704

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active

RE0331643

ABSTRACT:
Infectivity and replication of influenza viruses in successive numbers of cells of the same liquid cell culture is assured by including a protein hydrolyzing enzyme in the culture during virus incubation. Technique overcomes "one-step growth cycle" of virus and allows commercial influenza vaccine production from liquid cell cultures instead of from more costly embryonated chicken eggs. Resulting vaccine is thus substantially free of egg proteins.

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