Here's the reading for next week: "Robust perfect adaptation in bacterial chemotaxis through integral feedback control" Yi et al. PNAS, Vol. 97, Issue 9, 4649-4653, April 25, 2000 http://www.pnas.org/cgi/content/abstract/97/9/4649 On this page there are links to the article, supplementary data, and a nice commentary on the significance of the work. Thanks, Melissa