Pathway analyses of smoking-related metabolites. Figure shows enrichment and impact of smoking-related metabolites in Kyoto Encyclopedia of Genes and Genomes pathways. The enrichment scores are shown on y-axis, which was calculated as the negative logarithm of the P-value from an enrichment test. The x-axis indicates the structural impact with a score from 0 to 1 of the smoking-related metabolites in the enriched pathways.
Xu et al. BMC Medicine 2013 11:60 doi:10.1186/1741-7015-11-60