blue/white selection problem

Hiranya S. Roychowdhury hroychow at
Mon May 15 14:23:49 EST 2000

Concatenation of the vector is a distinct possibility. Are you using
dephosphorylated vector? If not, do it... you'll see the difference!

At 01:43 PM 5/15/00 -0500, Rodney Earl Pettway wrote:
>I am using blue/white selection to choose colonies with my insert.
>Unfortunately, my white colonies don't have inserts.  What could be
>causing this.
>Rodney Earl Pettway
>USDA-ARS Cereal Disease Lab
>University of Minnesota
>St. Paul, MN., 55108

Dr. Hiranya Sankar Roychowdhury
New Mexico State University
Las Cruces, NM 88003
Ph. (505) 646-5785
hroychow at


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