- 1949Associate Professor Of Experimental Pathology
- 1955[position unknown]
- 1972[position unknown]
- 1973[position unknown]
- 1982[position unknown]
- 1946Research Assistant
- 1995[position unknown]
- 1962Professor
- 1963Professor Of Microbiology
- 1964Professor Of Immunology
- 1975Professor Of Microbiology
- 1978Professor Of Microbiology
- 1980[position unknown]
- 1986[position unknown]
- 1982[position unknown]