Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal Perhaps this is a little off the topic, but you may be interested in the illustration of the problem that occurs when aqueous mounted slides dry over time. An example is at the bottom of http://www.aecom.yu.edu/aif/instructions/coverslips/coverslips.htm ___________________________________ WORK: http://www.aecom.yu.edu/aif/ PERSONAL: http://www.art-studio.us/