The results indicate that the amino acid located at position 96 of measles virus HA is closely related with its fusion helper function.

提示HA蛋白96位氨基酸是影响助融合活性的一个重要氨基酸。

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The researchers will also attempt to use knowledge of how the virus grows in cells to make a new type of virus that could only grow in specially designed "helper" cells, meaning the virus could not then grow in animals.

BBC: ?5.6m project seeks new foot-and-mouth vaccine