Biology, 19.05.2021 03:00 tlgbulldog38

21. In the 1880s, Louis Pasteur developed a method of weakening viruses. The weakened viruses could be injected into healthy individuals.
How is this method effective in fighting viral diseases?

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21. In the 1880s, Louis Pasteur developed a method of weakening viruses. The weakened viruses could...

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