FIG. 6.

Effects of chemical modifications of Hep G2 cells on cell fusion. CHO cell lines constitutively expressing both the chimeric E1 and E2 proteins (open bars) or transiently expressing the VSV G protein (solid bars) were cocultured with Hep G2 cells treated with various concentrations of pronase, sodium periodate, or phospholipase C. The relative cell fusion activities were determined by at least three independent experiments, each of which was conducted with triplicate samples. Vertical lines, standard deviations.