More on lacZ

[Fyodor_Urnov]

Folks, first off, thanks to everyone who responded to my biolistic gun query. 
For those interested, the short punchline is that it doesn't work very well 
and is hard to get to work.  The lower amounts of DNA that get into the embryo 
(as compared to manual injection) appear to be the bottleneck.

Second, and my apologies for cluttering this newsgroup with my requests for 
info, could some kind soul provide me with the reference and/or the protocol 
for visualizing beta-galactosidase expression in _living_ embryos/larvae?  
Note that I am _not_ after any procedure as a consequence of which you have a 
dead, blue (in more ways than one! :-)) embryo.  I would like the embryo to 
live and continue developing into a happy adult fly.  I guess the procedure 
involves bathing the embryo in x-gal, but what are the details?...

Many thanks in advance for any comments.  In case this version of the 
newsreader is misconfigured, my e-mail is: Fyodor_Urnov at brown.edu	
	
Sincerely,

Dr. Fyodor Urnov
Brown University
BioMed