余(1903-1988),浙江绍兴人,出生于北京。1923年毕业于北京医学专门学校,1929年获美国哈佛大学医学院博士学位。回国后,任北京大学医学院细菌学教授。1933年编著出版我国最早以阐述病原微生物为主的专著——《病原学》。1942年在上海开设医学化验所,兼同德医学院教授。后历任上海第二医学院微生物学教研室主任、基础医学部主任。1956年被评为一级教授。1978年荣获全国科学大会个人先进奖。1979年任上海市免疫学研究所所长。一早慧少年投身医学献才智余自幼聪颖,勤奋好学,六岁进私塾,八岁入北京师范大学附属小学学习。三年后,他考入北师大附中。十六岁以第 Yu  (1903-1988), Shaoxing, Zhejiang, was born in Beijing. He graduated from Beijing Medical College in 1923 and obtained a doctorate from Harvard Medical School in 1929. After returning home, Ren Peking University School of Medicine bacteriology professor. In 1933, we published the earliest monograph titled “Pathogenic Microorganisms” in China. In 1942 in Shanghai to open a medical laboratory, and a professor of German Medical College. After the Shanghai Second Medical College Department of Microbiology, director of the Department of Basic Medical. In 1956 was named a professor. In 1978 won the National Science Conference individual advanced award. 1979 Shanghai Institute of Immunology as director. An early Wisdom juvenile to dedicate themselves to medical Chi Yu  since childhood, studious, six-year-old private school, eight years of primary school affiliated to Beijing Normal University study. Three years later, he was admitted to the Beijing Normal University middle school. At the age of sixteen