Penicillin is produced by a fungus , specifically molds of the genus Penicillium.

Quick Scoop

  • The antibiotic penicillin comes from a type of microscopic fungus, not from bacteria or plants.
  • Historically, the first useful penicillin was obtained from the species Penicillium notatum (and later from Penicillium chrysogenum for industrial production).
  • These fungi naturally secrete penicillin to inhibit neighboring bacteria, and humans harness this ability to make the medicine used against bacterial infections.

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