| 摘要 |
The invention relates to a process for obtaining and purifying antigen-containing solutions, in particular for influenza viruses, from antigen-containing allantoic fluid. In a known process, influenza viruses are purified and initially concentrated by density gradient centrifugation. This known process operates with large losses and requires large expenditure on investment. In the process according to the invention, the elaborate density gradient centrifugation is replaced by the considerably simpler molecular filtration.
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