) Representative confocal images of NHBE cells show the localisation of NLRP0 (red), caspase-0 (Casp-0; green) and apoptosis-associated speck-like protein containing a carboxy-terminal caspase-recruitment domain (ASC; green) in the control (no treatment), *Af*-stimulated cells (*Af*), *Af*-stimulated cells administered drug vehicle (*Af*+VEH), 