DNA don't migrate...

Jukka U Palo jpalo at cc.Helsinki.FI
Mon Aug 26 03:21:04 EST 1996

One stupid question again. Recently I started to extract DNA from shrimps
(which, btw, seems to be difficult - any suggestions?). When I'm checking
the DNA in agarose gels, a great portion of the DNA stays in the wells.
What is the reason for this? First I thought it is due to proteins and
other impurities, but the samples behave in a similar way after second
phenol/chlorofom extraction, too. This happens with some of the samples, and
even seems to be somewhat species-specific phenomenon. These samples
still work reasonably well as PCR templates, but I'm just curious. Any
similar experiences?

Thanks, Jukka

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