KSHV infection and K13 expression induce the expression of CCL20 receptor CCR6 in HUVECs. Quantitative RT-PCR analysis showing induction of CCR6 mRNA in HUVECs after infection with KSHV (A) and in HUVEC-K13-ER^TAM cells on treatment with 4-OHT (B). The experiments were performed essentially as described in Figures 1A and 2A, respectively.