Fig. 1From: Immunomodulatory effects of nicotine on interleukin 1β activated human astrocytes and the role of cyclooxygenase 2 in the underlying mechanismCharacterization of cultured human cortical astrocytes using immunofluorescence. Human astrocytes were identified using GFAP monoclonal antibody (Alexa Fluor 594, red) and DAPI (blue). Fluorescence microscopy images of human astrocytes taken at a ×20 representing GFAP-positive (93 %) human astrocytes and b ×40 magnificationBack to article page