Alzheimer's presenilin mutation sensitizes neural cells to apoptosis induced by trophic factor withdrawal and amyloid beta-peptide: involvement of calcium and oxyradicals. - Guo Q; Sopher BL; Furukawa K; Pham DG; Robinson N; Martin GM; Mattson MP (The Journal of neuroscience : the official journal of the Society for Neuroscience, 1997)