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Effects of 8Br-cAMP or forskolin on GFAP expression in cultured astrocytes. Astrocytes were prepared as in Fig. 1. 8Br-cAMP or forskolin (both at 50, 100, or 250 μM) caused significant increases in GFAP protein, as assayed using Western blotting (∗, P < 0.05). The graph represents means and SEM obtained from three independent experiments.
