blue X-gal stocks

Martin Leach leach at
Wed Dec 1 17:14:24 EST 1993

In article <2dj72p$2s3 at>, jtsuruta at (James
Tsuruta) wrote:

> I'm posting this for someone next-door.  Has anyone ever seen their X-gal
> stock in DMF turn pale blue?  What can cause this? and is it OK to use in
> top agar?

our X-gal goes brown/orange when overexposed to light.

Martin Leach


.....          Martin Leach                Email:leach at 
   _|____      Dept. of Pharmacology       Phone: (617) 638-5323        
   / o  /      Boston Univ. School of Med. Fax:   (617) 638-4329         
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