Эдвард Дженнер, Пауль Эрлих, Эмиль фон Беринг и вакцинация
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![Эти волонтеры специально заболели малярией, чтобы мы знали, как ее лечить [Vox]](https://sun9-8.userapi.com/c846520/v846520033/1c76ce/JrAl9OxVmDk.jpg)
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