What Two Petri Dishes Taught Me About Antibiotics, Microbiology, and the Future of Medicine
By Dr. Von Apochi Director of Training, TCPR Institute Sometimes the biggest lessons in science come from the simplest experiments. One clear Petri dish, two tiny antibiotic discs, and bacteria that cannot even be seen with the naked eye can tell us a story that has helped physicians save millions of lives. Recently, while revisiting one of my microbiology laboratory investigations, I found myself smiling at something many people would overlook. I was not looking at expensive laboratory equipment or complex DNA sequencing machines. I was simply observing two bacterial cultures growing quietly on Mueller-Hinton agar. Yet those plates were teaching one of the most important lessons in modern medicine. A Simple Experiment With a Powerful Purpose The laboratory exercise used the Kirby-Bauer antibiotic susceptibility method , one of the world’s most widely accepted techniques for determining whether bacteria are likely to respond to a particular antibiotic. At first glance, the procedure se...