A prepositional change in my piece on academic and other tenure (Opinion, December 16) seems to have made it appear that I "presently" have 75 postdocs. This is, of course, the lifetime number (at an average of two or three a year over 25 to 35 years) that might reasonably pass through a lab of my type. The current team can be counted at http:///dbk.ch.umist.ac.uk .
Douglas Kell
Director of the Centre for Integrative Systems Biology
Manchester University