John A. M. MacDonald

John A. M. MacDonald is a respected Canadian scientist known for discovering how our immune system defends against tuberculosis bacteria. His research uncovered the role of T cells, a type of immune cell, in fighting infections. This discovery helped scientists understand immune responses better, leading to advances in vaccines and treatments for infectious diseases. MacDonald’s work has significantly contributed to immunology, the study of the immune system, and has improved global health efforts in combating infectious diseases.