Figure 4From: Growth of human bronchial epithelial cells at an air-liquid interface alters the response to particle exposure RT-PCR for IL-8 (A) and HOX1 (B) relative to GAPDH in unexposed BEAS-2B cells. RNA for both IL-8 and HOX1 significantly decreased with growth at ALI. *Significant difference relative to RNA in BEAS-2B cells at day 0.Back to article page