He was appointed to the faculty at the University of California , Berkeley , from 1982 to 1989 .
Following his Ph. D. , Tsien was a Research Fellow at Gonville and Caius College , Cambridge from 1977 to 1981 .
Tsien was appointed to the faculty at the University of California , Berkeley , from 1982 to 1989 .
Following his Ph. D. , Tsien was a Research Fellow at Gonville and Caius College , Cambridge from 1977 to 1981 .