Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal Not sure if one can view this Washington Post web page without creating a free user account, but give it a shot (pardon the pun). http://www.washingtonpost.com/wp-dyn/content/article/2008/07/10/AR2008071002709.html -- Robert J. Palmer Jr., Ph.D. Natl Inst Dental Craniofacial Res - Natl Insts Health Oral Infection and Immunity Branch Bldg 30, Room 310 30 Convent Drive Bethesda MD 20892 ph 301-594-0025 fax 301-402-0396