Neisseria meningitides bacterial supernatants induced an increase of MARCO immunoreactivity in astrocytes. Primary rat astrocytes and microglia were fixed and labelled with anti-FPRL1 and anti-MARCO antibodies. FPRL1 (A) and MARCO (B) protein expression was examined by immunofluorescence microscopy. Bisbenzimide was used for nuclear counter-staining (blue). The figures show representative results from one of three independent experiments. Scale bar: 20 μm.