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AIzaSyCYaC8UkdPkQKLFUmpasLV5eC3M802CrcA
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jan 6, 1930 - an efficient vaccine, or toxoid, as it is known in the cases of tetanus and diphtheria was produced against tetanus.

Added to timeline:

2 Oct 2017
0
0
179
Engineering 2 9/29/17

Date:

jan 6, 1930
Now
~ 88 years ago
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