Figure 1

Effective early infection by GLV-1h68 of human head and neck squamous cell carcinoma cell lines. Six cell lines were infected by GLV-1h68 at an MOI of 1 and fixed in 1% glutaraldehyde for X-gal staining, or unfixed cells were visualized under a GFP filter. Photomicrographs were taken at 100×. All six cell lines showed progressively increasing marker gene expression within 24 hours, demonstrating effective infection at early time points.