Fig. 2.

Propagation of HRV-C15 in different forms of human sinus epithelium. (A) Pieces of human sinus mucosal tissue were either infected with HRV-C15 (2.8×10⁸ RNA copies) (n=5), (B) dissociated into single cell suspension, passaged, and grown as a monolayer (n=3) and (C) differentiated at ALI (n=3) and then infected with the same dose of HRV-C15. Samples were incubated at 34 °C and tested immediately post-infection (PI) and again 48–72 h later for HRV RNA. *P<0.05.