
Penicillin
In Our Time
The Impact of Penicillin on the Treatment of Infectious Diseases
Most penicillin type molecules are still good drugs today. They're very good at things like staphylococci and streptococci. Gram-positive bacteria go a different colour when you expose them to what's called the gram stain. And they go purple and gram-negative bacteria like E. coli go a pinky colour. The major, most obvious impact was in treatment of infectious diseases.
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