Famous experiments involving microbes

Edward Jenner and smallpox

• Jenner found that people who caught cowpox did not catch smallpox.
• he tested his theory on an 8 year old boy
• he gave the boy cowpox then gave him the deadly smallpox and magically the boy did not develop smallpox!

Louis Pasteur and spontaneous generation

• people thought that microbes spontaneously appeared ou of non living material and contaminated food and liquids
• Pasteur proved that the…