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Colocalization of NLRP3 and cleaved IL-1β (IL-1b) in cigarette smoke (CS) extract-exposed THP-1 macrophages. Immunofluorescence staining showing colocalization (yellow) of NLRP3 (red) and cleaved IL-1β (green) in cigarette smoke extract-exposed THP-1 macrophages. DAPI, 4′,6-diamidino-2-phenylindole.
