Artefacts on SDS PA gels

Ian Ross I.Ross at
Wed Jul 19 19:52:39 EST 1995

HI - I didn't see the original query but I can verify that these bands 
are almost always due to keratin - usually from human fingers but 
sometimes from the tissue source.  If from humans, the only solution is 
scrupulous cleanliness.  Usually this becomes a problem with silver 
stained gels which of course are so much more sensitive than coomassie 


Ian Ross
Centre for Molecular and Cellular Biology
University of Queensland
Australia 4072

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