Literature
(1) Yamamoto, K.R. et al. (1970) Virology 40, 734-744. Rapid Bacteriophage sedimentation in the presence of Polyethyleneglycol and its application to large-scale virus purification. (2) Power, J.B. et al. (1986) Methods Enzymol. 118, 578-594. Fusion and transformation of plant protoplasts. (3) Zimmerman, S.B. & Pheiffer, B.H. (1983) Proc. Natl. Acad. Sci. USA 80, 5852-5856. 'Macromolecular crowding' enables 'blunt-end' ligations. (4) Pheiffer, B.H. & Zimmerman, S.B. (1983) Nucleic. Acids Res. 11, 7853-7871. Polymer-stimulated ligation of blunt and sticky DNA ends. (5) Ingham, K.C. (1990) Methods Enzymol. 182, 301-306. Precipitation of proteins with polyethylene glycol.