Baruj Benacerraf was a renowned immunologist born in Madrid, Spain, in 1920, and later became an American citizen. He is best known for his groundbreaking work on the genetic basis of the immune response, which significantly advanced the understanding of how the immune system functions at a molecular level. His research helped uncover the genetic factors that influence immune reactions, paving the way for many medical advancements. Throughout his career, Benacerraf was dedicated to...