They found significant differences in gene expression patterns and DNA modifications between donors under the age of 9 and those older than 28. (sciencedaily.com)
The group looked for differences in gene expression by comparing levels of messenger RNA — the middle - man between gene and protein production — throughout the entire genome. (newscientist.com)
However, there were no significant differences in gene expression between baseline and three months in the non-responders. (sciencedaily.com)