FIG. 3.
Flow cytometry measurements of wild-type and glycosaminoglycan-deficient CHO-K1 cell infections. CHO-K1 cells and their glycosaminoglycan-deficient derivatives were infected with DA1, GDVII, KJ38, and KJ27 viruses at an MOI of 5 PFU/cell for 24 h (upper panel) and at an MOI of 1 PFU/cell for 48 h (lower panel). Histograms show the percentage of infected cells determined by flow cytometry after intracellular viral antigen labeling.