Passage: Born in West Point, New York, Yvonne Cagle graduated from Novato High School in Novato, California. She received her bachelor's degree in biochemistry from San Francisco State University in 1981, and a doctor of medicine degree from the University of Washington in 1985. She completed a transitional internship at Highland General Hospital in Oakland, California in 1985 and received a certificate in Aerospace Medicine from the School of Aerospace Medicine at Brooks Air Force Base, Texas, in 1988. She then went on to complete a residency in family practice at Ghent FP at Eastern Virginia Medical School in 1992 and received certification as a senior aviation medical examiner from the Federal Aviation Administration in 1995.

Question: When did Cagle receive her medical degree?
1985