Figure 6From: Hemin inhibits NO production by IL-1β-stimulated human astrocytes through induction of heme oxygenase-1 and reduction of p38 MAPK activationImmunocytochemical reaction of IL-1β-induced HO-1 expression. Human astrocyte cultures were pretreated with hemin for 24 h prior to IL-1β exposure for 72 h followed by fixation and immunocytochemical reaction for HO-1. Untreated control (C), blue - DAPI nuclei staining and red - HO-1 reaction.Back to article page