Increased safety level of serotype 3 sabin oral poliomyelitis vaccine lots by improved seed virus, and tissue culture and virus infection conditions
The content of 472U to 472C revertant virus in serotype 3 oral poliomyelitis monovalent bulk vaccines can be quantified by MAPREC (Mutant Analysis by PCR and Restriction Enzyme Cleavage). Besides other wildtype reversions identified in propagated type 3 Sabin strain populations, the 472U to 472C rev...
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Veröffentlicht in: | Vaccine 2000-05, Vol.18 (22), p.2435-2443 |
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