Fig. 2.

The effect of polyethylene slides coated with N,N-dodecyl,methyl-PEI on high-titer human pathogenic PR8 influenza virus strain (PR8H, Table 2). (A) Virucidal activity of PR8H by bare (white bars) and N,N-dodecyl,methyl-PEI-coated polyethylene slides (hatch-marked bars). (B) SDS/PAGE of the concentrated PR8H strain run on a 7% polyacrylamide gel and stained with the commassie blue dye. Lanes 1, 2, and 3 represent virus samples prior to assay, after contact with bare slides and after contact with polycation-coated slides, respectively. (C) Protein disappeared from solution by bare slides (gray bars) and polycation-coated slides (black bars), as determined by gel-scanning densitometry.