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\nThere have long been hints that innate immunity can last longer in certain circumstances. The most-studied example is the Bacillus Calmette-Guerin tuberculosis vaccine, which is given to some 100 million newborns every year. Epidemiological and clinical studies have shown that it can decrease infant mortality from other infections, suggesting that the cross-protection could last months. But the phenomenon was inconsistent and the mechanism mysterious.
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Объявлено о разрушениях после одной из самых мощных атак ВСУ на Севастополь08:00。谷歌是该领域的重要参考
当时,英伟达股价一度下跌近 17%,瞬间蒸发 6000 亿美元。
Постпред России объяснил причину неучастия ООН в переговорах по Украине02:05