Peter Nelson, with Dennis Selkoe, John Hardy, and Alain Israel, led this live discussion on 5 May 1999. Readers are invited to submit additional comments by using our Comments form at the bottom of the page. Transcript: Live discussion with Dennis Selkoe,
Marc Paradis led this live discussion on 20 March 1998. Readers are invited to submit additional comments by using our Comments form at the bottom of the page. Paper under Discussion: Li JH, Xu M, Zhou H. Ma J. and Potter H. Alzheimer presenilins in the n