Complex sentence: He was born in Rockford, Ill., entered Florida State University at age 15, earned a bachelor's degree in three years; he then obtained a M.D. at the University of Florida in 1970.
Split into simpler sentences: He was born in Rockford, Ill., entered Florida State University at age 15, and earned a bachelor's degree in three years. He then obtained a M.D. at the University of Florida in 1970.