Fig. 5From: The lung response to ozone is determined by age and is partially dependent on toll-Like receptor 4Age-related change in pulmonary TLR4 expression. TLR4 expression was determined by real-time qPCR in whole lung tissue. Data are normalized to GAPDH and are presented as mean ± SEM (n = 4–14 mice/group). *: Statistical difference between the age groups (p < 0.05)Back to article page