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SVEN [57.7K]
3 years ago
10

In the 1880s, Louis Pasteur developed a method of weakening viruses. The weakened viruses could be injected into healthy individ

uals.
Biology
1 answer:
RSB [31]3 years ago
7 0

This would be describing a vaccination.

If you appreciated my answer, please brainliest me!

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