Rosalind Franklin University of Medicine and Science (RFU) is a private graduate school in North Chicago, Illinois. It has more than 2,000 students in five schools: Chicago Medical School, College of Health Professions, College of Pharmacy, Dr. William M. Scholl College of Podiatric Medicine, and School of Graduate and Postdoctoral Studies. The university is named for famous DNA crystallographer Rosalind Franklin. Photo 51, an X-ray diffraction pattern of the B form of DNA, captured by Franklin in 1952, was pivotal in the history of biology in the 20th Century. The image is depicted in the university's seal and logo.