1. Department
of Chemical and Biological Engineering, ‡Chemistry of Life Processes Institute, and §Interdisciplinary
Biological Sciences Program, Northwestern University, Evanston, Illinois 60208, United States
2. Cell Culture and Fermentation
Sciences and ⊥Analytical Sciences, MedImmune LLC, Gaithersburg, Maryland 20878, United States
3. Member, Robert H. Lurie Comprehensive Cancer Center and ∇Member, Simpson
Querrey Institute, Northwestern University, Chicago, Illinois 60611, United States