Yes. We have such experience. See our recent paper:
M.Fleischmann et al.: "Cardiac specific expression
of the green fluorescent protein during early murine embryonic
development". FEBS Letters (1998), 440, 370-376.
This article with pictures of our"green heart" embryos is also available
for free in PDF format by next www.address:
http://www.elsevier.nl:80/cgi-bin/cas/tree/store/febs/cas_free/browse/browse.cgi?year=1998&volume=440&issue=3
Additionaly, we can give some information on the metabolism of EGFP in
our
adult mice wich produce huge amounts of EGFP due to expression in the
sceletal muscles.
Regards. Eugene
Dr. E.Kolossov
Institute for Neurophysiology
University of Cologne
Robert-Koch-Str.39
50931 Cologne, Germany
tel: 49-221/478-3415
fax: 49-221/478-6965
e-mail:ek at physiologie.uni-koeln.de