Key points from article :
Mammalian lifespan differs by >100-fold
Skin fibroblasts from 16 species of mammals studied under identical cell culture conditions.
Key features of cells from longer-lived species:
1. up-regulated genes involved in DNA repair and glucose metabolism
2. down-regulated proteolysis and protein transport
3. high levels of amino acids but low levels of lysophosphatidylcholine and lysophosphatidylethanolamine
