Figure 1From: Glutathione-S-transferase M1 regulation of diesel exhaust particle-induced pro-inflammatory mediator expression in normal human bronchial epithelial cells DEP exposure increases IL-8 and IL-1β protein expression in HBEC. Confluent HBEC were exposed to control (PBS) or 25–100 μg/ml DEP for 24 h, respectively. IL-8 and IL-1β levels in the supernatants of culture media were measured using ELISA.Back to article page