FIG. 1.

Infection of continuous cell lines (Vero, MDBK, and HBE) by BPIV3 and BRSV. Confluent cells grown on collagenized filter supports were inoculated with virus at an MOI of 0.1 from the apical side. At 2 dpi, cultures were fixed and stained with an antibody for β-tubulin (red). Virus-infected cells are visualized by the expression of GFP (green).