I can't tell you where to find a UV laser but did you consider the new Syto
dyes from Molecular Probes? These dyes stain living cells in either the
red or green channels of a confocal with either the common Ar or Kr/Ar
lasers. we have been using Syto16 and Syto 17 with pretty good luck.
Thomas E. Phillips, Ph.D.
Associate Professor of Biological Sciences
Director, Molecular Cytology Core Facility
3 Tucker Hall
University of Missouri
Columbia, MO 65211
(314)-882-4712 (voice)
(314)-882-0123 (fax)