Figure 5From: Gene promoter methylation assayed in exhaled breath, with differences in smokers and lung cancer patients Methylation density of DAPK promoter in non-cancer controls by underlying lung disease. The methylation density of DAPK promoter in EBC samples from COPD, asthma and non-lung disease donors was compared by ANOVA multiple group comparison. There was no significant difference in methylation density between asthma, COPD and the non-diseased group (n = number of subjects). (p = 0.806)Back to article page