blue X-gal stocks

Patricia Foster pfoster at bu.edu
Thu Dec 2 17:57:59 EST 1993


John Cooper (picard at nih.gov) wrote:

: We use our xgal that has turned yellow on our top agar and it works fine...

  Yellow, maybe, but blue, never.  The stuff has cleaved --
throw it out.  The solution is to keep your DMF dry by
storing it under argon passed through a column of dririte.
Make up the Xgal in small volumns and keep at -20.
pat

--
Patricia L. Foster
Boston University School of Medicine
Boston, MA USA
pfoster at bu.edu



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