%0 Journal Article %T Essential role of CED-4 oligomerization in CED-3 activation and apoptosis. %A Yang, X %A Chang, H Y %A Baltimore, D %J Science (New York, N.Y.) %V 281 %N 5381 %P 1355-7 %@ 0036-8075 %D 1998-09-09 %~ DeepDyve