FIG. 7.

Heparin inhibition. PrV-1112 and PrV-gC⁻ were titrated on MDBK and NB cells in the presence (black bars) and absence (white bars) of heparin (50 μg/ml). The addition of heparin reduced titers of gC⁺ PrV-1112 on both cell lines to a similar extent, whereas PrV-gC⁻ was not affected by the presence of heparin on either cell line. Average values and standard variations (error bars) of three independent experiments are shown.