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  • Alexander Fleming Quote - Penicillin sat on a shelf for ten years while I was called a quack. Download This Image
  • Alexander Fleming Quote - Penicillin sat on a shelf for ten years while I was called a quack.
  • Alexander Fleming Quote - Penicillin sat on a shelf for ten years while I was called a quack.
  • Alexander Fleming Quote - Penicillin sat on a shelf for ten years while I was called a quack.
  • Alexander Fleming Quote - Penicillin sat on a shelf for ten years while I was called a quack.
  • Alexander Fleming Quote - Penicillin sat on a shelf for ten years while I was called a quack.
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Alexander Fleming Quote - Penicillin sat on a shelf for ten years while I was called a quack.

Penicillin sat on a shelf for ten years while I was called a quack.