Electrophoretically separated lysates of cells infected with gD−/+ virus or rescuants and reacted with a monoclonal antibody to gI (A) or polyclonal antibody to gJ (B). SK-N-SH cells were mock infected or exposed (10 PFU/cell) to wild-type virus, P6 (gD−/+), or p10 (gD−/+) or individually to three independently derived gD+/+ rescuants. The cells were harvested at 18 h after infection, solubilized, subjected to electrophoresis in denaturing gels, and reacted with a monoclonal antibody to US7 (gI) or polyclonal antibody to US5 (gJ).