Cells spontaneously zeocin resistant?

Ian A. York via methods%40net.bio.net (by iayork from panix.com)
Fri Apr 11 10:29:18 EST 2008

In article <J1yLj.53$zr3.41 from newsfe07.lga>,
DK <dk from no.email.thankstospam.net> wrote:
>In article <ftlijb$hm$1 from reader2.panix.com>, iayork from panix.com (Ian
>A. York) wrote:
>>We've routinely made stable cell lines using plasmids containing 
>>zeocin resistance.  However, recently some of our starting cell lines 
>>have apparently become spontaneously resistant to zeocin at fairly 
>>high doses, at least 1000 ug/ml.
>The whole cell lines became resistant or you start occasionally seeing 
>clones in the mock transformations? 

Either the whole cell line, or at least a large fraction of the 
cells.  A well with zeo, seeded at about 10% confluence, becomes 
confluent at roughly the same rate as an untreated well.

    Ian York   (iayork from panix.com)  <http://www.panix.com/~iayork/>
    "-but as he was a York, I am rather inclined to suppose him a
     very respectable Man." -Jane Austen, The History of England

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