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In article <47fj07$n4v at due.unit.no>,
Hilde Nilsen <hilden at unigen.unit.no> wrote:
>>I am screening a genomic lambda libary. I am using host cells without selection.
>The problem is that as I am transferring the plaques to Hybond N+ membranes,
>the top-agarose adheres to the membrane thereby ruining everything.
>I suspect this to happen because of moisture between the top-agarose and the medium.
>>So, what can I do to prevent this? I am cooling the medium to 50 deg. celsius before
>preparing the plates so too hot medium should not be the problem.
i have two suggestions for you.
1) try to use plates that have been 'cured' for a day or two so that
they are not to wet when you apply the top agar.
2) this is what i usually do to prevent the top agar from lifting off.
i just cool the plates to 4 deg C after the plaques have grown and i
have not had any problems with it lifting off when i do this.
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patrick finerty = zinc at zifi.genetics.utah.edu = pfinerty at nyx.cs.du.edu
U of Utah biochem grad student in the Bass lab - zinc fingers + dsRNA!
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