Rathjen and his new wife Joy returned to South Australia, where he took a teaching role and in 1995 was appointed to the Chair of Biochemistry at Adelaide University and as head of the new ceDepartment of Molecular Biosciences in 2000.
Rathjen was appointed to the Chair of Biochemistry at Adelaide University and as head of the new ceDepartment of Molecular Biosciences in 2000. His new wife Joy returned to South Australia and in 1995 was appointed to the Chair of Biochemistry at Adelaide University and as head of the new ceDepartment of Molecular Biosciences in 2000. He took a teaching role.