A: Transnasal inoculation of PAO-1 into the left maxillary sinus using a 22-gauge spinal needle after placement of nasal packing (*: Septum, MMS: Medial wall of maxillary sinus, MT: Middle turbinate)
B: Rabbit nasal cavity (left) on week 1 (*: Septum, #: Purulent drainage)
C: Rabbit nasal cavity (left) on week 3 after placement of CSS for 2 weeks (MT: Middle turbinate)
D: Rabbit nasal cavity (left) on Week 3 after insertion of sham stent for 2 weeks (MT: Middle turbinate, *: Septum, #: Purulent drainage from middle meatus)