Final answer:
Alexander Fleming discovered penicillin, revolutionizing antimicrobial research. Selman Waksman showcased the potential of actinomycetes for antibiotic discovery. Paul Ehrlich pioneered the search for agents targeting infectious microbes.
Explanation:
Alexander Fleming discovered the first natural antibiotic, penicillin, in 1928, which marked the beginning of the modern age of antimicrobial research. This discovery revolutionized medicine by providing a powerful tool to combat bacterial infections.
Selman Waksman demonstrated the vast antimicrobial production capabilities of actinomycetes, a group of soil bacteria, leading to the discovery of various antibiotics like streptomycin and neomycin. His work highlighted the importance of natural sources in antibiotic development.
Paul Ehrlich initiated the systematic search for chemotherapeutic agents targeting infectious microbes, paving the way for the discovery of antibiotics. His research laid the foundation for the development of antibiotics to treat bacterial infections.
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