A Second Act for Phages

Almost 100 years ago, in a Paris laboratory, Félix d’Hérelle peered at cultures packed with dysentery bacteria. He had cultured the organisms from the stool of people with the disease, and usually the bacteria blanketed the entire plate. This time, however, d’Hérelle saw something different: “plaques,” or holes, dotted the bacterial smear in cultures from […]