Terwel D, Steffensen KR, Verghese PB, Kummer MP, Gustafsson J?, Holtzman DM, Heneka MT. Critical role of astroglial apolipoprotein E and liver X receptor-a expression for microglial A? phagocytosis. J Neurosci. 2011 May 11; 31(19):7049-59.