Susumu Tonegawa, the renowned Japanese scientist who won the Nobel Prize for Physiology or Medicine in 1987, has passed away. His groundbreaking research on the genetic foundations of the immune system revolutionized the field of immunology. The date and cause of his death are not specified in the article.

In Japan, Tonegawa's death is particularly solemn news given his position as one of the most respected figures in the field of science. His Nobel prize was far from an individual honor, but also a symbol of the Japanese scientific community's global achievements. His research has directly influenced both healthcare policies and education in the country.

In the US or EU, passings of such eminent figures in science are treated with similar gravity and respect. The works of such scientists are commemorated, and their contributions to humanity are celebrated. National flags may even be lowered, and ceremonies held in their honor, reflecting the prominence given to scientific achievements.