Chemokines secretion induced following RSV infection. PBECs were infected with RSV A2, BT2a, BT3a or BT4a at an MOI of 0.1 during 2 h and washed with PBS. Supernatant from infected- and mock-infected cultures were harvested at 24, 72 and 96 h post infection and tested for RANTES (CCL5), IP-10 (CXCL10), IL-6, IL-8 (CXCL8), TNF-related apoptosis-inducing ligand (TRAIL) and vascular endothelial growth factor (VEGF). All values are means of 6 individual donors ± SE. Data were analyzed using One-Way repeated measures ANOVA with a Bonferroni post-test. *P < 0.05. **P < 0.01. ***P < 0.001.