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Immunofluorescent analysis of glial fibrillary acidic protein (GFAP) in E18 Sparague Dawley primary cortical neuronal cells containing astrocytes. The cells were fixed with 4% formaldehyde for 15 mins, permeabilized with 0.25% Triton X-100 in PBS for 10 mins, and blocked with 3% BSA in PBS for 30 mins at RT. Cells were stained with a GFAP mouse monoclonal antibody (Product ## MA5-12023) at a dilution of 1:200 in 3% BSA in PBS for 1 hr at RT, and then incubated with Invitrogen? AlexaFluor? 488 Plus goat anti-mouse IgG secondary antibody (Product ## A32723) at a dilution of 1:1000 for 1 hr at RT. Nuclei were stained with Hoechst 33342 (product ## H3570). The image contains overlay of GFAP (green) and nuclei (blue). Images were taken on a Zeiss LSM 710 confocal microscope at 40X magnification.
