In 1984, he moved to Hoffman LaRoche Roche Institute of Molecular Biology as a full member and in 1986, he joined the Wistar Institute as their deputy director.
This passage describes a career progression for someone who moved from one institution to another.  In 1984, he joined Hoffman-LaRoche's Roche Institute of Molecular Biology as a full member and in 1986, he became the deputy director at the Wistar Institute.