Elevated interferon gamma signaling contributes to impaired regeneration in the aged liver. - Singh P; Goode T; Dean A; Awad SS; Darlington GJ; Singh, Pallavi; Goode, Triona; Dean, Adam; Awad, Samir S; Darlington, Gretchen J (Journals of Gerontology Series A: Biological Sciences & Medical Sciences, 2011)