RSV infects bronchial epithelial cells more efficiently.

<p>(A) Human nasal, tracheal, and bronchial epithelial cells after infection with GFP-expressing RSV (rgRSV) at 1 MOI for 48 h. The bright field panels (left) show the total number of cells. The green fluorescent cells (center) represent those which are actively infected with RSV. (B) Bronchial epithelial cells are the most susceptible to RSV infection. Flow cytometric data show the percentage of fluorescent (infected) cells in each panel compared to the non-infected control cells (shaded histogram). Data are expressed as the mean±SEM (n = 4 experiments). *** = <i>p</i><0.001 compared to nasal or tracheal cells.