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An intranasal immunization with a A/PR8/34-isolated NA, protected mice as well as the whole virus and A/Hong Kong/1/68 virus against a subsequent infection with mice-adaptated A/PR8/34 strain.
用从A/PR8/34分离出的神经氨酸酶进行鼻内免疫,可保护小鼠以及全病毒和A/香港/1/68病毒免受随后小鼠适应的A/PR8/34毒株的感染。