23. Penicillium Fungus: Bacterial Infection Fighter
Alexander Fleming discovered penicillin in 1928 when this mold contaminated his bacterial cultures. The compound interferes with bacterial cell wall formation. Scientists later created semi-synthetic versions like amoxicillin, which resists stomach acid and targets more bacterial species. Large-scale production began during World War II, saving countless soldiers’ lives. Antibiotic resistance now threatens penicillin’s effectiveness, spurring ongoing development of new derivatives with enhanced properties.