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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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30 dic 1931 año - In 1932 German bacteriologist Gerhard Domagk announced that the red dye Prontosil is active against streptococcal infections in mice and humans.
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Engineering 2 9/29/17
By
Josiah Valery
2 oct 2017
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fecha:
30 dic 1931 año
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~ 93 years ago
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