The presence of oxygen, methane and carbon dioxide, for instance, are widely considered chemical markers of life. (sciencenewsforstudents.org)
This new research shows that the short chain fatty acids increase the number of chemical markers on our genes. (sciencedaily.com)
By measuring levels of the stress hormone cortisol, plus other chemical markers, the team found that the task caused more cell damage in the women who were already stressed. (newscientist.com)