Article
Characterization of live influenza vaccine donor strain derived from cold-adaptation of X-31 virus.
Vaccine - 10 Mar 2006
Lee Kwang-Hee, Seo Sang-Uk, Song Jae-Min, Lee Chung-Min, Kim Hyun-Ah, Seong Baik L
Abstract excerpt
A human influenza A virus X-31 (high-yielding strain) was cold-adapted for possible future use as live attenuated vaccine. Mutant influenza viruses were selected during successive serial passage in embryonated hens' eggs at progressively lower sub-optimal temperature (30, 27 degrees C followed by 24 degrees C). The cold-passaged mutant exhibited both temperature-sensitivity (ts) and cold-adapted (ca) phenotypes....
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