1. Albertsson, P. Å., and Nyns, J., Nature, 184, 1465 (1959).
2. Albertsson, P. Å., and Nyns, J., Arkiv Kemi, 17, 197 (1961).
3. Albertsson, P. Å., Partition of Cell Particles and Macromolecules (Almqvist and Wiksell, Stockholm, 1960, and Wiley, New York).
4. Walter, H., and Sasakawa, S., Fed. Proc., 28, 907 (1969).
5. Albertsson, P. Å., in Advt. Prot. Chem. (in the press).