- 1961[position unknown]
- 1949Director Biological Laboratories
- 1949Instructor
- 1960Associate Professor In Biology
- 1961Associate Professor Of Biology
- 1962Professor Of Biology
- 1963Professor Of Biology
- 1954Director Of Department Of Biology
- 2004[position unknown]
- 2007[position unknown]
- 1929Instructor In Biology
- 1949Professor Of Biophysics
- 2007[position unknown]
- 1963Associate Professor Of Microbiology
- 1954Graduate Fellow
- 1963[position unknown]
- 2012[position unknown]
- 1960[position unknown]
- 1961[position unknown]
- 2016PostDoc